190561569 has 12 divisors (see below), whose sum is σ = 279280848. Its totient is φ = 115491640.

The previous prime is 190561541. The next prime is 190561571. The reversal of 190561569 is 965165091.

It is not a de Polignac number, because 190561569 - 2⁵ = 190561537 is a prime.

It is a super-2 number, since 2×190561569² = 72627423159483522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 190561569.

It is not an unprimeable number, because it can be changed into a prime (190561589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262119 + ... + 262844.

It is an arithmetic number, because the mean of its divisors is an integer number (23273404).

Almost surely, 2^190561569 is an apocalyptic number.

It is an amenable number.

190561569 is a deficient number, since it is larger than the sum of its proper divisors (88719279).

190561569 is a wasteful number, since it uses less digits than its factorization.

190561569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524988 (or 524977 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 190561569 is about 13804.4039711970. The cubic root of 190561569 is about 575.4555371832.

The spelling of 190561569 in words is "one hundred ninety million, five hundred sixty-one thousand, five hundred sixty-nine".