11638951 has 2 divisors, whose sum is σ = 11638952. Its totient is φ = 11638950.

The previous prime is 11638903. The next prime is 11638961. The reversal of 11638951 is 15983611.

11638951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11638951 - 2⁹ = 11638439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11638961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819475 + 5819476.

It is an arithmetic number, because the mean of its divisors is an integer number (5819476).

Almost surely, 2^11638951 is an apocalyptic number.

11638951 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638951 is an equidigital number, since it uses as much as digits as its factorization.

11638951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 11638951 is about 3411.5906847100. The cubic root of 11638951 is about 226.6233281714.

The spelling of 11638951 in words is "eleven million, six hundred thirty-eight thousand, nine hundred fifty-one".