913187945 has 8 divisors (see below), whose sum is σ = 1096043136. Its totient is φ = 730405296.

The previous prime is 913187921. The next prime is 913187953. The reversal of 913187945 is 549781319.

913187945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913187945 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 913187945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15104 + ... + 45326.

It is an arithmetic number, because the mean of its divisors is an integer number (137005392).

Almost surely, 2^913187945 is an apocalyptic number.

It is an amenable number.

913187945 is a deficient number, since it is larger than the sum of its proper divisors (182855191).

913187945 is a wasteful number, since it uses less digits than its factorization.

913187945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36271.

The product of its digits is 272160, while the sum is 47.

The square root of 913187945 is about 30218.9997352659. Note that the first 3 decimals coincide. The cubic root of 913187945 is about 970.1823956437.

The spelling of 913187945 in words is "nine hundred thirteen million, one hundred eighty-seven thousand, nine hundred forty-five".