2816390638 has 16 divisors (see below), whose sum is σ = 4308073776. Its totient is φ = 1380412800.

The previous prime is 2816390609. The next prime is 2816390639. The reversal of 2816390638 is 8360936182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2816390639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116245 + ... + 138367.

It is an arithmetic number, because the mean of its divisors is an integer number (269254611).

Almost surely, 2^2816390638 is an apocalyptic number.

2816390638 is a deficient number, since it is larger than the sum of its proper divisors (1491683138).

2816390638 is a wasteful number, since it uses less digits than its factorization.

2816390638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23379.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 2816390638 is about 53069.6771989429. The cubic root of 2816390638 is about 1412.2046288486.

The spelling of 2816390638 in words is "two billion, eight hundred sixteen million, three hundred ninety thousand, six hundred thirty-eight".