2638472633 has 2 divisors, whose sum is σ = 2638472634. Its totient is φ = 2638472632.

The previous prime is 2638472621. The next prime is 2638472717. The reversal of 2638472633 is 3362748362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2404627369 + 233845264 = 49037^2 + 15292^2 .

It is a cyclic number.

It is not a de Polignac number, because 2638472633 - 2¹² = 2638468537 is a prime.

It is not a weakly prime, because it can be changed into another prime (2638472033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319236316 + 1319236317.

It is an arithmetic number, because the mean of its divisors is an integer number (1319236317).

Almost surely, 2^2638472633 is an apocalyptic number.

It is an amenable number.

2638472633 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638472633 is an equidigital number, since it uses as much as digits as its factorization.

2638472633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 44.

The square root of 2638472633 is about 51366.0649943131. The cubic root of 2638472633 is about 1381.8180604333.

The spelling of 2638472633 in words is "two billion, six hundred thirty-eight million, four hundred seventy-two thousand, six hundred thirty-three".