918743945 has 16 divisors (see below), whose sum is σ = 1264688640. Its totient is φ = 627647424.

The previous prime is 918743933. The next prime is 918743953. The reversal of 918743945 is 549347819.

It is a cyclic number.

It is not a de Polignac number, because 918743945 - 2¹⁸ = 918481801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 918743893 and 918743902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39377 + ... + 58206.

It is an arithmetic number, because the mean of its divisors is an integer number (79043040).

Almost surely, 2^918743945 is an apocalyptic number.

It is an amenable number.

918743945 is a deficient number, since it is larger than the sum of its proper divisors (345944695).

918743945 is a wasteful number, since it uses less digits than its factorization.

918743945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97864.

The product of its digits is 1088640, while the sum is 50.

The square root of 918743945 is about 30310.7892506942. The cubic root of 918743945 is about 972.1460068593.

The spelling of 918743945 in words is "nine hundred eighteen million, seven hundred forty-three thousand, nine hundred forty-five".