2638087651 has 8 divisors (see below), whose sum is σ = 2698768160. Its totient is φ = 2578070592.

The previous prime is 2638087619. The next prime is 2638087691. The reversal of 2638087651 is 1567808362.

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

It is a cyclic number.

It is not a de Polignac number, because 2638087651 - 2⁵ = 2638087619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2638087691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157815 + ... + 173728.

It is an arithmetic number, because the mean of its divisors is an integer number (337346020).

Almost surely, 2^2638087651 is an apocalyptic number.

2638087651 is a deficient number, since it is larger than the sum of its proper divisors (60680509).

2638087651 is a wasteful number, since it uses less digits than its factorization.

2638087651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331725.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2638087651 is about 51362.3174224061. The cubic root of 2638087651 is about 1381.7508497108.

The spelling of 2638087651 in words is "two billion, six hundred thirty-eight million, eighty-seven thousand, six hundred fifty-one".