914931945 has 24 divisors (see below), whose sum is σ = 1587550536. Its totient is φ = 487450368.

The previous prime is 914931931. The next prime is 914931989. The reversal of 914931945 is 549139419.

It can be written as a sum of positive squares in 4 ways, for example, as 244484496 + 670447449 = 15636^2 + 25893^2 .

It is not a de Polignac number, because 914931945 - 2¹⁵ = 914899177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 914931945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34669 + ... + 55061.

It is an arithmetic number, because the mean of its divisors is an integer number (66147939).

Almost surely, 2^914931945 is an apocalyptic number.

It is an amenable number.

914931945 is a deficient number, since it is larger than the sum of its proper divisors (672618591).

914931945 is a wasteful number, since it uses less digits than its factorization.

914931945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21401 (or 21398 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 914931945 is about 30247.8419891403. The cubic root of 914931945 is about 970.7996187563.

The spelling of 914931945 in words is "nine hundred fourteen million, nine hundred thirty-one thousand, nine hundred forty-five".