1381580496 has 80 divisors (see below), whose sum is σ = 3996083520. Its totient is φ = 456992640.

The previous prime is 1381580483. The next prime is 1381580507. The reversal of 1381580496 is 6940851831.

1381580496 is a `hidden beast` number, since 1 + 3 + 8 + 158 + 0 + 496 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44386 + ... + 68798.

It is an arithmetic number, because the mean of its divisors is an integer number (49951044).

Almost surely, 2^1381580496 is an apocalyptic number.

1381580496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381580496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1998041760).

1381580496 is an abundant number, since it is smaller than the sum of its proper divisors (2614503024).

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

1381580496 is a wasteful number, since it uses less digits than its factorization.

1381580496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24561 (or 24549 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1381580496 is about 37169.6179157118. The cubic root of 1381580496 is about 1113.7611492042.

The spelling of 1381580496 in words is "one billion, three hundred eighty-one million, five hundred eighty thousand, four hundred ninety-six".