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189235201 = 1030318367
BaseRepresentation
bin10110100011110…
…00000000000001
3111012002010220011
423101320000001
5341421011301
630435544521
74455321061
oct1321700001
9435063804
10189235201
1197900231
125345b141
13302885bc
141b1bd3a1
151192ea51
hexb478001

189235201 has 4 divisors (see below), whose sum is σ = 189263872. Its totient is φ = 189206532.

The previous prime is 189235183. The next prime is 189235261. The reversal of 189235201 is 102532981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102532981 = 671530343.

It is a cyclic number.

It is not a de Polignac number, because 189235201 - 25 = 189235169 is a prime.

It is a super-2 number, since 2×1892352012 = 71619922595020802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189235261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120 + ... + 19486.

It is an arithmetic number, because the mean of its divisors is an integer number (47315968).

It is a Proth number, since it is equal to 5775 ⋅ 215 + 1 and 5775 < 215.

Almost surely, 2189235201 is an apocalyptic number.

It is an amenable number.

189235201 is a deficient number, since it is larger than the sum of its proper divisors (28671).

189235201 is a wasteful number, since it uses less digits than its factorization.

189235201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28670.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 189235201 is about 13756.2786028780. The cubic root of 189235201 is about 574.1173108213.

The spelling of 189235201 in words is "one hundred eighty-nine million, two hundred thirty-five thousand, two hundred one".

Divisors: 1 10303 18367 189235201