1380515808 has 144 divisors (see below), whose sum is σ = 4351947264. Its totient is φ = 381669120.

The previous prime is 1380515803. The next prime is 1380515809. The reversal of 1380515808 is 8085150831.

It is a super-2 number, since 2×1380515808² = 3811647792275785728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380515803) 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, 141091 + ... + 150557.

It is an arithmetic number, because the mean of its divisors is an integer number (30221856).

Almost surely, 2^1380515808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380515808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2175973632).

1380515808 is an abundant number, since it is smaller than the sum of its proper divisors (2971431456).

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

1380515808 is a wasteful number, since it uses less digits than its factorization.

1380515808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9525 (or 9510 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 39.

The square root of 1380515808 is about 37155.2931357028. The cubic root of 1380515808 is about 1113.4749762617.

The spelling of 1380515808 in words is "one billion, three hundred eighty million, five hundred fifteen thousand, eight hundred eight".