188248913 has 4 divisors (see below), whose sum is σ = 189376320. Its totient is φ = 187121508.

The previous prime is 188248901. The next prime is 188248937. The reversal of 188248913 is 319842881.

188248913 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 a cyclic number.

It is not a de Polignac number, because 188248913 - 2⁶ = 188248849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188248943) 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, 563453 + ... + 563786.

It is an arithmetic number, because the mean of its divisors is an integer number (47344080).

Almost surely, 2^188248913 is an apocalyptic number.

It is an amenable number.

188248913 is a deficient number, since it is larger than the sum of its proper divisors (1127407).

188248913 is a wasteful number, since it uses less digits than its factorization.

188248913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127406.

The product of its digits is 110592, while the sum is 44.

The square root of 188248913 is about 13720.3831214730. The cubic root of 188248913 is about 573.1181457256.

The spelling of 188248913 in words is "one hundred eighty-eight million, two hundred forty-eight thousand, nine hundred thirteen".