2187979016 has 32 divisors (see below), whose sum is σ = 4461191640. Its totient is φ = 1001806848.

The previous prime is 2187978973. The next prime is 2187979051. The reversal of 2187979016 is 6109797812.

It can be written as a sum of positive squares in 4 ways, for example, as 1984346116 + 203632900 = 44546^2 + 14270^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212375 + ... + 222438.

Almost surely, 2^2187979016 is an apocalyptic number.

It is an amenable number.

2187979016 is an abundant number, since it is smaller than the sum of its proper divisors (2273212624).

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

2187979016 is a wasteful number, since it uses less digits than its factorization.

2187979016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434873 (or 434869 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 50.

The square root of 2187979016 is about 46775.8379508053. The cubic root of 2187979016 is about 1298.2182723665.

The spelling of 2187979016 in words is "two billion, one hundred eighty-seven million, nine hundred seventy-nine thousand, sixteen".