2139377919 has 8 divisors (see below), whose sum is σ = 3260004480. Its totient is φ = 1222501656.

The previous prime is 2139377887. The next prime is 2139377923. The reversal of 2139377919 is 9197739312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2139377919 - 2⁵ = 2139377887 is a prime.

It is a super-2 number, since 2×2139377919² = 9153875760609541122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139377939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50937549 + ... + 50937590.

It is an arithmetic number, because the mean of its divisors is an integer number (407500560).

Almost surely, 2^2139377919 is an apocalyptic number.

2139377919 is a deficient number, since it is larger than the sum of its proper divisors (1120626561).

2139377919 is a wasteful number, since it uses less digits than its factorization.

2139377919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101875149.

The product of its digits is 642978, while the sum is 51.

The square root of 2139377919 is about 46253.4098094400. The cubic root of 2139377919 is about 1288.5338628210.

The spelling of 2139377919 in words is "two billion, one hundred thirty-nine million, three hundred seventy-seven thousand, nine hundred nineteen".