23015203949 has 2 divisors, whose sum is σ = 23015203950. Its totient is φ = 23015203948.

The previous prime is 23015203921. The next prime is 23015204159. The reversal of 23015203949 is 94930251032.

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., 12750474724 + 10264729225 = 112918^2 + 101315^2 .

It is a cyclic number.

It is not a de Polignac number, because 23015203949 - 2⁸ = 23015203693 is a prime.

It is a super-2 number, since 2×23015203949² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23015203249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11507601974 + 11507601975.

It is an arithmetic number, because the mean of its divisors is an integer number (11507601975).

Almost surely, 2^23015203949 is an apocalyptic number.

It is an amenable number.

23015203949 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015203949 is an equidigital number, since it uses as much as digits as its factorization.

23015203949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 23015203949 in words is "twenty-three billion, fifteen million, two hundred three thousand, nine hundred forty-nine".