1380756505 has 16 divisors (see below), whose sum is σ = 1745899200. Its totient is φ = 1045396800.

The previous prime is 1380756499. The next prime is 1380756511. The reversal of 1380756505 is 5056570831.

It is an interprime number because it is at equal distance from previous prime (1380756499) and next prime (1380756511).

It is not a de Polignac number, because 1380756505 - 2²³ = 1372367897 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92931 + ... + 106759.

It is an arithmetic number, because the mean of its divisors is an integer number (109118700).

Almost surely, 2^1380756505 is an apocalyptic number.

It is an amenable number.

1380756505 is a deficient number, since it is larger than the sum of its proper divisors (365142695).

1380756505 is a wasteful number, since it uses less digits than its factorization.

1380756505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14904.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 1380756505 is about 37158.5320619639. The cubic root of 1380756505 is about 1113.5396850491.

The spelling of 1380756505 in words is "one billion, three hundred eighty million, seven hundred fifty-six thousand, five hundred five".