11501913 has 4 divisors (see below), whose sum is σ = 15335888. Its totient is φ = 7667940.

The previous prime is 11501881. The next prime is 11502019. The reversal of 11501913 is 31910511.

11501913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11501913 - 2⁵ = 11501881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11501913.

It is not an unprimeable number, because it can be changed into a prime (11501813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916983 + ... + 1916988.

It is an arithmetic number, because the mean of its divisors is an integer number (3833972).

Almost surely, 2^11501913 is an apocalyptic number.

It is an amenable number.

11501913 is a deficient number, since it is larger than the sum of its proper divisors (3833975).

11501913 is an equidigital number, since it uses as much as digits as its factorization.

11501913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833974.

The product of its (nonzero) digits is 135, while the sum is 21.

The square root of 11501913 is about 3391.4470362959. The cubic root of 11501913 is about 225.7303869722.

The spelling of 11501913 in words is "eleven million, five hundred one thousand, nine hundred thirteen".