18977713 has 8 divisors (see below), whose sum is σ = 20099520. Its totient is φ = 17868240.

The previous prime is 18977639. The next prime is 18977723. The reversal of 18977713 is 31777981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18977713 - 2⁹ = 18977201 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 18977713.

It is not an unprimeable number, because it can be changed into a prime (18977723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (2512440).

Almost surely, 2^18977713 is an apocalyptic number.

It is an amenable number.

18977713 is a deficient number, since it is larger than the sum of its proper divisors (1121807).

18977713 is a wasteful number, since it uses less digits than its factorization.

18977713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167.

The product of its digits is 74088, while the sum is 43.

The square root of 18977713 is about 4356.3416991783. The cubic root of 18977713 is about 266.7357895463.

The spelling of 18977713 in words is "eighteen million, nine hundred seventy-seven thousand, seven hundred thirteen".