1381506080 has 24 divisors (see below), whose sum is σ = 3263808492. Its totient is φ = 552602368.

The previous prime is 1381506073. The next prime is 1381506083. The reversal of 1381506080 is 806051831.

It can be written as a sum of positive squares in 2 ways, for example, as 1155184144 + 226321936 = 33988^2 + 15044^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1381506083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317047 + ... + 4317366.

Almost surely, 2^1381506080 is an apocalyptic number.

1381506080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381506080 is an abundant number, since it is smaller than the sum of its proper divisors (1882302412).

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

1381506080 is an equidigital number, since it uses as much as digits as its factorization.

1381506080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8634428 (or 8634420 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1381506080 is about 37168.6168696119. The cubic root of 1381506080 is about 1113.7411520251.

The spelling of 1381506080 in words is "one billion, three hundred eighty-one million, five hundred six thousand, eighty".