2139554908 has 12 divisors (see below), whose sum is σ = 3745155960. Its totient is φ = 1069510352.

The previous prime is 2139554897. The next prime is 2139554909. The reversal of 2139554908 is 8094559312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139554909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48178 + ... + 81241.

It is an arithmetic number, because the mean of its divisors is an integer number (312096330).

Almost surely, 2^2139554908 is an apocalyptic number.

It is an amenable number.

2139554908 is a deficient number, since it is larger than the sum of its proper divisors (1605601052).

2139554908 is a wasteful number, since it uses less digits than its factorization.

2139554908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133556 (or 133554 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 2139554908 is about 46255.3230234100. The cubic root of 2139554908 is about 1288.5693949616.

The spelling of 2139554908 in words is "two billion, one hundred thirty-nine million, five hundred fifty-four thousand, nine hundred eight".