2151416988 has 72 divisors (see below), whose sum is σ = 6415718400. Its totient is φ = 594859680.

The previous prime is 2151416983. The next prime is 2151417017. The reversal of 2151416988 is 8896141512.

It is a happy number.

2151416988 is a `hidden beast` number, since 2 + 151 + 416 + 9 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151416983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129888 + ... + 145511.

It is an arithmetic number, because the mean of its divisors is an integer number (89107200).

Almost surely, 2^2151416988 is an apocalyptic number.

2151416988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2151416988 is an abundant number, since it is smaller than the sum of its proper divisors (4264301412).

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

2151416988 is a wasteful number, since it uses less digits than its factorization.

2151416988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275447 (or 275442 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 2151416988 is about 46383.3697352834. The cubic root of 2151416988 is about 1290.9463616327.

The spelling of 2151416988 in words is "two billion, one hundred fifty-one million, four hundred sixteen thousand, nine hundred eighty-eight".