1918936488 has 32 divisors (see below), whose sum is σ = 5482676160. Its totient is φ = 548267520.

The previous prime is 1918936463. The next prime is 1918936499. The reversal of 1918936488 is 8846398191.

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 7 ways as a sum of consecutive naturals, for example, 5710953 + ... + 5711288.

It is an arithmetic number, because the mean of its divisors is an integer number (171333630).

Almost surely, 2^1918936488 is an apocalyptic number.

It is an amenable number.

1918936488 is an abundant number, since it is smaller than the sum of its proper divisors (3563739672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1918936488 is a wasteful number, since it uses less digits than its factorization.

1918936488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422257 (or 11422253 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 57.

The square root of 1918936488 is about 43805.6673045851. The cubic root of 1918936488 is about 1242.6634753403.

The spelling of 1918936488 in words is "one billion, nine hundred eighteen million, nine hundred thirty-six thousand, four hundred eighty-eight".