1365431660 has 12 divisors (see below), whose sum is σ = 2867406528. Its totient is φ = 546172656.

The previous prime is 1365431657. The next prime is 1365431671. The reversal of 1365431660 is 661345631.

It is a self number, because there is not a number n which added to its sum of digits gives 1365431660.

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, 34135772 + ... + 34135811.

It is an arithmetic number, because the mean of its divisors is an integer number (238950544).

Almost surely, 2^1365431660 is an apocalyptic number.

1365431660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1365431660 is an abundant number, since it is smaller than the sum of its proper divisors (1501974868).

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

1365431660 is a wasteful number, since it uses less digits than its factorization.

1365431660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68271592 (or 68271590 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1365431660 is about 36951.7477259195. The cubic root of 1365431660 is about 1109.4046695338.

The spelling of 1365431660 in words is "one billion, three hundred sixty-five million, four hundred thirty-one thousand, six hundred sixty".