1380724515 has 32 divisors (see below), whose sum is σ = 2456965440. Its totient is φ = 735683328.

The previous prime is 1380724493. The next prime is 1380724529. The reversal of 1380724515 is 5154270831.

1380724515 is a `hidden beast` number, since 138 + 0 + 7 + 2 + 4 + 515 = 666.

It is not a de Polignac number, because 1380724515 - 2⁸ = 1380724259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1380724515.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156769 + ... + 165341.

It is an arithmetic number, because the mean of its divisors is an integer number (76780170).

Almost surely, 2^1380724515 is an apocalyptic number.

1380724515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1380724515 is a deficient number, since it is larger than the sum of its proper divisors (1076240925).

1380724515 is a wasteful number, since it uses less digits than its factorization.

1380724515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9780 (or 9774 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1380724515 is about 37158.1016065138. The cubic root of 1380724515 is about 1113.5310853167.

The spelling of 1380724515 in words is "one billion, three hundred eighty million, seven hundred twenty-four thousand, five hundred fifteen".