2139962685 has 64 divisors (see below), whose sum is σ = 4149196800. Its totient is φ = 919994112.

The previous prime is 2139962653. The next prime is 2139962701. The reversal of 2139962685 is 5862699312.

It is not a de Polignac number, because 2139962685 - 2⁵ = 2139962653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 273447 + ... + 281163.

It is an arithmetic number, because the mean of its divisors is an integer number (64831200).

Almost surely, 2^2139962685 is an apocalyptic number.

It is an amenable number.

2139962685 is a deficient number, since it is larger than the sum of its proper divisors (2009234115).

2139962685 is a wasteful number, since it uses less digits than its factorization.

2139962685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7890.

The product of its digits is 1399680, while the sum is 51.

The square root of 2139962685 is about 46259.7307060904. The cubic root of 2139962685 is about 1288.6512524205.

The spelling of 2139962685 in words is "two billion, one hundred thirty-nine million, nine hundred sixty-two thousand, six hundred eighty-five".