3626938561 has 2 divisors, whose sum is σ = 3626938562. Its totient is φ = 3626938560.

The previous prime is 3626938547. The next prime is 3626938619. The reversal of 3626938561 is 1658396263.

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., 3545487936 + 81450625 = 59544^2 + 9025^2 .

It is an emirp because it is prime and its reverse (1658396263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3626938561 - 2⁵ = 3626938529 is a prime.

It is not a weakly prime, because it can be changed into another prime (3626938261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1813469280 + 1813469281.

It is an arithmetic number, because the mean of its divisors is an integer number (1813469281).

Almost surely, 2^3626938561 is an apocalyptic number.

It is an amenable number.

3626938561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3626938561 is an equidigital number, since it uses as much as digits as its factorization.

3626938561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 3626938561 is about 60224.0696150634. The cubic root of 3626938561 is about 1536.4321973123.

The spelling of 3626938561 in words is "three billion, six hundred twenty-six million, nine hundred thirty-eight thousand, five hundred sixty-one".