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249195193 = 1320539337
BaseRepresentation
bin11101101101001…
…10101010111001
3122100220102112121
432312212222321
51002243221233
640421041241
76114060412
oct1666465271
9570812477
10249195193
11118734045
126b556221
133c8202a0
142514a809
1516d2592d
hexeda6ab9

249195193 has 8 divisors (see below), whose sum is σ = 268523528. Its totient is φ = 229889664.

The previous prime is 249195157. The next prime is 249195223. The reversal of 249195193 is 391591942.

It can be written as a sum of positive squares in 4 ways, for example, as 53978409 + 195216784 = 7347^2 + 13972^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249195193 - 29 = 249194681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249195103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22021 + ... + 31357.

It is an arithmetic number, because the mean of its divisors is an integer number (33565441).

Almost surely, 2249195193 is an apocalyptic number.

It is an amenable number.

249195193 is a deficient number, since it is larger than the sum of its proper divisors (19328335).

249195193 is a wasteful number, since it uses less digits than its factorization.

249195193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11403.

The product of its digits is 87480, while the sum is 43.

The square root of 249195193 is about 15785.9175533131. The cubic root of 249195193 is about 629.2838027325.

The spelling of 249195193 in words is "two hundred forty-nine million, one hundred ninety-five thousand, one hundred ninety-three".

Divisors: 1 13 2053 9337 26689 121381 19168861 249195193