190255865 has 16 divisors (see below), whose sum is σ = 235224000. Its totient is φ = 147642432.

The previous prime is 190255853. The next prime is 190255907. The reversal of 190255865 is 568552091.

It is a cyclic number.

It is not a de Polignac number, because 190255865 - 2⁶ = 190255801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29066 + ... + 35004.

It is an arithmetic number, because the mean of its divisors is an integer number (14701500).

Almost surely, 2^190255865 is an apocalyptic number.

It is an amenable number.

190255865 is a deficient number, since it is larger than the sum of its proper divisors (44968135).

190255865 is a wasteful number, since it uses less digits than its factorization.

190255865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6136.

The product of its (nonzero) digits is 108000, while the sum is 41.

The square root of 190255865 is about 13793.3268285791. The cubic root of 190255865 is about 575.1476520628.

The spelling of 190255865 in words is "one hundred ninety million, two hundred fifty-five thousand, eight hundred sixty-five".