2638412306 has 8 divisors (see below), whose sum is σ = 3959939340. Its totient is φ = 1318432528.

The previous prime is 2638412297. The next prime is 2638412347. The reversal of 2638412306 is 6032148362.

It can be written as a sum of positive squares in 2 ways, for example, as 2385443281 + 252969025 = 48841^2 + 15905^2 .

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

It is a super-2 number, since 2×2638412306² = 13922438992904475272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382541 + ... + 389376.

Almost surely, 2^2638412306 is an apocalyptic number.

2638412306 is a deficient number, since it is larger than the sum of its proper divisors (1321527034).

2638412306 is a wasteful number, since it uses less digits than its factorization.

2638412306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773628.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 2638412306 is about 51365.4777647400. The cubic root of 2638412306 is about 1381.8075288891.

The spelling of 2638412306 in words is "two billion, six hundred thirty-eight million, four hundred twelve thousand, three hundred six".