511161904 has 20 divisors (see below), whose sum is σ = 1080410760. Its totient is φ = 232346240.

The previous prime is 511161901. The next prime is 511161907. The reversal of 511161904 is 409161115.

It is an interprime number because it is at equal distance from previous prime (511161901) and next prime (511161907).

It is a super-2 number, since 2×511161904² = 522572984201810432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511161901) 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 3 ways as a sum of consecutive naturals, for example, 1451989 + ... + 1452340.

It is an arithmetic number, because the mean of its divisors is an integer number (54020538).

Almost surely, 2^511161904 is an apocalyptic number.

It is an amenable number.

511161904 is an abundant number, since it is smaller than the sum of its proper divisors (569248856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511161904 is a wasteful number, since it uses less digits than its factorization.

511161904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904348 (or 2904342 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 511161904 is about 22608.8899329445. The cubic root of 511161904 is about 799.5632532754.

The spelling of 511161904 in words is "five hundred eleven million, one hundred sixty-one thousand, nine hundred four".