18877313952 has 96 divisors (see below), whose sum is σ = 62924400000. Its totient is φ = 5393516544.

The previous prime is 18877313951. The next prime is 18877313953. The reversal of 18877313952 is 25931377881.

It is a happy number.

18877313952 is a `hidden beast` number, since 188 + 7 + 73 + 1 + 395 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (18877313951) and next prime (18877313953).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (18877313951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554577 + ... + 1566672.

It is an arithmetic number, because the mean of its divisors is an integer number (655462500).

Almost surely, 2^18877313952 is an apocalyptic number.

18877313952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18877313952 is an abundant number, since it is smaller than the sum of its proper divisors (44047086048).

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

18877313952 is a wasteful number, since it uses less digits than its factorization.

18877313952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121275 (or 3121261 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 18877313952 in words is "eighteen billion, eight hundred seventy-seven million, three hundred thirteen thousand, nine hundred fifty-two".