2139156519 has 32 divisors (see below), whose sum is σ = 2987974656. Its totient is φ = 1359742560.

The previous prime is 2139156511. The next prime is 2139156521. The reversal of 2139156519 is 9156519312.

It is not a de Polignac number, because 2139156519 - 2³ = 2139156511 is a prime.

It is a super-4 number, since 4×2139156519⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139156511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2258404 + ... + 2259350.

It is an arithmetic number, because the mean of its divisors is an integer number (93374208).

Almost surely, 2^2139156519 is an apocalyptic number.

2139156519 is a deficient number, since it is larger than the sum of its proper divisors (848818137).

2139156519 is a wasteful number, since it uses less digits than its factorization.

2139156519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its digits is 72900, while the sum is 42.

The square root of 2139156519 is about 46251.0164104531. The cubic root of 2139156519 is about 1288.4894120118.

The spelling of 2139156519 in words is "two billion, one hundred thirty-nine million, one hundred fifty-six thousand, five hundred nineteen".