2138486672 has 20 divisors (see below), whose sum is σ = 4735220736. Its totient is φ = 916494240.

The previous prime is 2138486659. The next prime is 2138486711. The reversal of 2138486672 is 2766848312.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9546704 + ... + 9546927.

Almost surely, 2^2138486672 is an apocalyptic number.

It is an amenable number.

2138486672 is an abundant number, since it is smaller than the sum of its proper divisors (2596734064).

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

2138486672 is a wasteful number, since it uses less digits than its factorization.

2138486672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19093646 (or 19093640 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 2138486672 is about 46243.7744134278. The cubic root of 2138486672 is about 1288.3549071476.

The spelling of 2138486672 in words is "two billion, one hundred thirty-eight million, four hundred eighty-six thousand, six hundred seventy-two".