18827329464 has 24 divisors (see below), whose sum is σ = 50990684160. Its totient is φ = 6275776464.

The previous prime is 18827329457. The next prime is 18827329471. The reversal of 18827329464 is 46492372881.

18827329464 is a `hidden beast` number, since 1 + 88 + 273 + 294 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (18827329457) and next prime (18827329471).

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 18827329464.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 130745272 + ... + 130745415.

It is an arithmetic number, because the mean of its divisors is an integer number (2124611840).

Almost surely, 2^18827329464 is an apocalyptic number.

It is an amenable number.

18827329464 is an abundant number, since it is smaller than the sum of its proper divisors (32163354696).

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

18827329464 is a wasteful number, since it uses less digits than its factorization.

18827329464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261490699 (or 261490692 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 18827329464 in words is "eighteen billion, eight hundred twenty-seven million, three hundred twenty-nine thousand, four hundred sixty-four".