1387195660 has 12 divisors (see below), whose sum is σ = 2913110928. Its totient is φ = 554878256.

The previous prime is 1387195639. The next prime is 1387195673. The reversal of 1387195660 is 665917831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1387195660.

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, 34679872 + ... + 34679911.

It is an arithmetic number, because the mean of its divisors is an integer number (242759244).

Almost surely, 2^1387195660 is an apocalyptic number.

1387195660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1387195660 is an abundant number, since it is smaller than the sum of its proper divisors (1525915268).

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

1387195660 is a wasteful number, since it uses less digits than its factorization.

1387195660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69359792 (or 69359790 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1387195660 is about 37245.0756476611. The cubic root of 1387195660 is about 1115.2679978104.

The spelling of 1387195660 in words is "one billion, three hundred eighty-seven million, one hundred ninety-five thousand, six hundred sixty".