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190002899 = 857221707
BaseRepresentation
bin10110101001100…
…11011011010011
3111020112010222102
423110303123103
5342120043044
630504231015
74464666212
oct1324633323
9436463872
10190002899
1198284a99
125376b46b
1330496b68
141b33d079
1511a3224e
hexb5336d3

190002899 has 4 divisors (see below), whose sum is σ = 190225464. Its totient is φ = 189780336.

The previous prime is 190002893. The next prime is 190002919. The reversal of 190002899 is 998200091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190002899 - 28 = 190002643 is a prime.

It is a super-2 number, since 2×1900028992 = 72202203256808402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190002893) 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, 109997 + ... + 111710.

It is an arithmetic number, because the mean of its divisors is an integer number (47556366).

Almost surely, 2190002899 is an apocalyptic number.

190002899 is a deficient number, since it is larger than the sum of its proper divisors (222565).

190002899 is an equidigital number, since it uses as much as digits as its factorization.

190002899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222564.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 190002899 is about 13784.1539094716. The cubic root of 190002899 is about 574.8926317485.

The spelling of 190002899 in words is "one hundred ninety million, two thousand, eight hundred ninety-nine".

Divisors: 1 857 221707 190002899