2638432807 has 2 divisors, whose sum is σ = 2638432808. Its totient is φ = 2638432806.

The previous prime is 2638432763. The next prime is 2638432873. The reversal of 2638432807 is 7082348362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2638432807 - 2¹⁹ = 2637908519 is a prime.

It is a super-2 number, since 2×2638432807² = 13922655354107798498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638432897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319216403 + 1319216404.

It is an arithmetic number, because the mean of its divisors is an integer number (1319216404).

Almost surely, 2^2638432807 is an apocalyptic number.

2638432807 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638432807 is an equidigital number, since it uses as much as digits as its factorization.

2638432807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 2638432807 is about 51365.6773244547. The cubic root of 2638432807 is about 1381.8111078550.

The spelling of 2638432807 in words is "two billion, six hundred thirty-eight million, four hundred thirty-two thousand, eight hundred seven".