2139706898 has 16 divisors (see below), whose sum is σ = 3705886464. Its totient is φ = 907562880.

The previous prime is 2139706889. The next prime is 2139706909. The reversal of 2139706898 is 8986079312.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 786458 + ... + 789173.

It is an arithmetic number, because the mean of its divisors is an integer number (231617904).

Almost surely, 2^2139706898 is an apocalyptic number.

2139706898 is a deficient number, since it is larger than the sum of its proper divisors (1566179566).

2139706898 is a wasteful number, since it uses less digits than its factorization.

2139706898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575737.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 2139706898 is about 46256.9659402776. The cubic root of 2139706898 is about 1288.5999067633.

The spelling of 2139706898 in words is "two billion, one hundred thirty-nine million, seven hundred six thousand, eight hundred ninety-eight".