1285653164 has 12 divisors (see below), whose sum is σ = 2368308600. Its totient is φ = 608993568.

The previous prime is 1285653121. The next prime is 1285653167. The reversal of 1285653164 is 4613565821.

It is not an unprimeable number, because it can be changed into a prime (1285653167) 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, 8458169 + ... + 8458320.

It is an arithmetic number, because the mean of its divisors is an integer number (197359050).

Almost surely, 2^1285653164 is an apocalyptic number.

It is an amenable number.

1285653164 is a deficient number, since it is larger than the sum of its proper divisors (1082655436).

1285653164 is a wasteful number, since it uses less digits than its factorization.

1285653164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16916512 (or 16916510 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 1285653164 is about 35856.0059683172. The cubic root of 1285653164 is about 1087.3631416977.

The spelling of 1285653164 in words is "one billion, two hundred eighty-five million, six hundred fifty-three thousand, one hundred sixty-four".