120951913 has 2 divisors, whose sum is σ = 120951914. Its totient is φ = 120951912.

The previous prime is 120951899. The next prime is 120951977. The reversal of 120951913 is 319159021.

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., 62536464 + 58415449 = 7908^2 + 7643^2 .

It is a cyclic number.

It is not a de Polignac number, because 120951913 - 2⁵ = 120951881 is a prime.

It is not a weakly prime, because it can be changed into another prime (120951613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60475956 + 60475957.

It is an arithmetic number, because the mean of its divisors is an integer number (60475957).

Almost surely, 2^120951913 is an apocalyptic number.

It is an amenable number.

120951913 is a deficient number, since it is larger than the sum of its proper divisors (1).

120951913 is an equidigital number, since it uses as much as digits as its factorization.

120951913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 120951913 is about 10997.8140100658. The cubic root of 120951913 is about 494.5432142915.

The spelling of 120951913 in words is "one hundred twenty million, nine hundred fifty-one thousand, nine hundred thirteen".