2139849054 has 24 divisors (see below), whose sum is σ = 5298674160. Its totient is φ = 611385408.

The previous prime is 2139849043. The next prime is 2139849079. The reversal of 2139849054 is 4509489312.

2139849054 is a `hidden beast` number, since 21 + 3 + 98 + 490 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8491339 + ... + 8491590.

It is an arithmetic number, because the mean of its divisors is an integer number (220778090).

Almost surely, 2^2139849054 is an apocalyptic number.

2139849054 is an abundant number, since it is smaller than the sum of its proper divisors (3158825106).

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

2139849054 is a wasteful number, since it uses less digits than its factorization.

2139849054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16982944 (or 16982941 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2139849054 is about 46258.5025049450. The cubic root of 2139849054 is about 1288.6284430941.

The spelling of 2139849054 in words is "two billion, one hundred thirty-nine million, eight hundred forty-nine thousand, fifty-four".