1245231664 has 40 divisors (see below), whose sum is σ = 2505433392. Its totient is φ = 599086080.

The previous prime is 1245231643. The next prime is 1245231719. The reversal of 1245231664 is 4661325421.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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, 34887 + ... + 60889.

Almost surely, 2^1245231664 is an apocalyptic number.

It is an amenable number.

1245231664 is an abundant number, since it is smaller than the sum of its proper divisors (1260201728).

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

1245231664 is a wasteful number, since it uses less digits than its factorization.

1245231664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26125 (or 26119 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 1245231664 is about 35287.8401719346. The cubic root of 1245231664 is about 1075.8458571452.

The spelling of 1245231664 in words is "one billion, two hundred forty-five million, two hundred thirty-one thousand, six hundred sixty-four".