1380501756 has 36 divisors (see below), whose sum is σ = 3570759192. Its totient is φ = 449465184.

The previous prime is 1380501739. The next prime is 1380501763. The reversal of 1380501756 is 6571050831.

1380501756 is a `hidden beast` number, since 1 + 3 + 80 + 501 + 75 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1380501756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444351 + ... + 447446.

Almost surely, 2^1380501756 is an apocalyptic number.

It is an amenable number.

1380501756 is an abundant number, since it is smaller than the sum of its proper divisors (2190257436).

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

1380501756 is a wasteful number, since it uses less digits than its factorization.

1380501756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891850 (or 891845 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1380501756 is about 37155.1040369960. The cubic root of 1380501756 is about 1113.4711983010.

The spelling of 1380501756 in words is "one billion, three hundred eighty million, five hundred one thousand, seven hundred fifty-six".