1351865664 has 84 divisors (see below), whose sum is σ = 4043391456. Its totient is φ = 431025408.

The previous prime is 1351865663. The next prime is 1351865677. The reversal of 1351865664 is 4665681531.

1351865664 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 86 + 566 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351865663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37774 + ... + 64269.

Almost surely, 2^1351865664 is an apocalyptic number.

It is an amenable number.

1351865664 is an abundant number, since it is smaller than the sum of its proper divisors (2691525792).

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

1351865664 is a wasteful number, since it uses less digits than its factorization.

1351865664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102084 (or 102071 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 1351865664 is about 36767.7258475419. The cubic root of 1351865664 is about 1105.7183385694.

The spelling of 1351865664 in words is "one billion, three hundred fifty-one million, eight hundred sixty-five thousand, six hundred sixty-four".