18811064 has 16 divisors (see below), whose sum is σ = 37127400. Its totient is φ = 8910432.

The previous prime is 18811057. The next prime is 18811069. The reversal of 18811064 is 46011881.

It is a super-2 number, since 2×18811064² = 707712257624192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18811069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61727 + ... + 62030.

Almost surely, 2^18811064 is an apocalyptic number.

It is an amenable number.

18811064 is a deficient number, since it is larger than the sum of its proper divisors (18316336).

18811064 is a wasteful number, since it uses less digits than its factorization.

18811064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123782 (or 123778 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 18811064 is about 4337.1723507373. The cubic root of 18811064 is about 265.9527305908.

The spelling of 18811064 in words is "eighteen million, eight hundred eleven thousand, sixty-four".