2642816139 has 32 divisors (see below), whose sum is σ = 3728989440. Its totient is φ = 1662460800.

The previous prime is 2642816083. The next prime is 2642816161. The reversal of 2642816139 is 9316182462.

It is not a de Polignac number, because 2642816139 - 2⁸ = 2642815883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2642816139.

It is not an unprimeable number, because it can be changed into a prime (2642811139) 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, 761869 + ... + 765329.

It is an arithmetic number, because the mean of its divisors is an integer number (116530920).

Almost surely, 2^2642816139 is an apocalyptic number.

2642816139 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2642816139 is a deficient number, since it is larger than the sum of its proper divisors (1086173301).

2642816139 is a wasteful number, since it uses less digits than its factorization.

2642816139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691.

The product of its digits is 124416, while the sum is 42.

The square root of 2642816139 is about 51408.3275258007. The cubic root of 2642816139 is about 1382.5759034961.

The spelling of 2642816139 in words is "two billion, six hundred forty-two million, eight hundred sixteen thousand, one hundred thirty-nine".