1285475916 has 12 divisors (see below), whose sum is σ = 2999443832. Its totient is φ = 428491968.

The previous prime is 1285475899. The next prime is 1285476007. The reversal of 1285475916 is 6195745821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53561485 + ... + 53561508.

Almost surely, 2^1285475916 is an apocalyptic number.

It is an amenable number.

1285475916 is an abundant number, since it is smaller than the sum of its proper divisors (1713967916).

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

1285475916 is a wasteful number, since it uses less digits than its factorization.

1285475916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107123000 (or 107122998 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The square root of 1285475916 is about 35853.5342190976. The cubic root of 1285475916 is about 1087.3131692258.

The spelling of 1285475916 in words is "one billion, two hundred eighty-five million, four hundred seventy-five thousand, nine hundred sixteen".