1375115220 has 72 divisors (see below), whose sum is σ = 4229971200. Its totient is φ = 361529280.

The previous prime is 1375115207. The next prime is 1375115221. The reversal of 1375115220 is 225115731.

1375115220 is a `hidden beast` number, since 137 + 5 + 1 + 1 + 522 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375115221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41020 + ... + 66579.

It is an arithmetic number, because the mean of its divisors is an integer number (58749600).

Almost surely, 2^1375115220 is an apocalyptic number.

1375115220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375115220 is an abundant number, since it is smaller than the sum of its proper divisors (2854855980).

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

1375115220 is a wasteful number, since it uses less digits than its factorization.

1375115220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107685 (or 107680 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1375115220 is about 37082.5460290957. The cubic root of 1375115220 is about 1112.0211046579.

The spelling of 1375115220 in words is "one billion, three hundred seventy-five million, one hundred fifteen thousand, two hundred twenty".