13118977 has 4 divisors (see below), whose sum is σ = 13285120. Its totient is φ = 12952836.

The previous prime is 13118957. The next prime is 13118981. The reversal of 13118977 is 77981131.

13118977 is digitally balanced in base 3, 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13118977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13118957) 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, 82953 + ... + 83110.

It is an arithmetic number, because the mean of its divisors is an integer number (3321280).

Almost surely, 2^13118977 is an apocalyptic number.

It is an amenable number.

13118977 is a deficient number, since it is larger than the sum of its proper divisors (166143).

13118977 is an equidigital number, since it uses as much as digits as its factorization.

13118977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166142.

The product of its digits is 10584, while the sum is 37.

The square root of 13118977 is about 3622.0128381882. The cubic root of 13118977 is about 235.8486113734.

The spelling of 13118977 in words is "thirteen million, one hundred eighteen thousand, nine hundred seventy-seven".