609111912 has 16 divisors (see below), whose sum is σ = 1522779840. Its totient is φ = 203037296.

The previous prime is 609111907. The next prime is 609111913. The reversal of 609111912 is 219111906.

It is a self number, because there is not a number n which added to its sum of digits gives 609111912.

It is not an unprimeable number, because it can be changed into a prime (609111913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12689808 + ... + 12689855.

It is an arithmetic number, because the mean of its divisors is an integer number (95173740).

Almost surely, 2^609111912 is an apocalyptic number.

It is an amenable number.

609111912 is an abundant number, since it is smaller than the sum of its proper divisors (913667928).

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

609111912 is a wasteful number, since it uses less digits than its factorization.

609111912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25379672 (or 25379668 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 30.

The square root of 609111912 is about 24680.1927058927. The cubic root of 609111912 is about 847.6808347073.

The spelling of 609111912 in words is "six hundred nine million, one hundred eleven thousand, nine hundred twelve".