918729918016 has 21 divisors (see below), whose sum is σ = 1823119897441. Its totient is φ = 459361124992.

The previous prime is 918729917999. The next prime is 918729918023. The reversal of 918729918016 is 610819927819.

The square root of 918729918016 is 958504.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 490616193600 + 428113724416 = 700440^2 + 654304^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7608126 + ... + 7727938.

Almost surely, 2^918729918016 is an apocalyptic number.

918729918016 is the 958504-th square number.

It is an amenable number.

918729918016 is a deficient number, since it is larger than the sum of its proper divisors (904389979425).

918729918016 is an frugal number, since it uses more digits than its factorization.

918729918016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239638 (or 119815 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 61.

The spelling of 918729918016 in words is "nine hundred eighteen billion, seven hundred twenty-nine million, nine hundred eighteen thousand, sixteen".