1381556496 has 40 divisors (see below), whose sum is σ = 3572610624. Its totient is φ = 460055680.

The previous prime is 1381556489. The next prime is 1381556513. The reversal of 1381556496 is 6946551831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35530 + ... + 63446.

Almost surely, 2^1381556496 is an apocalyptic number.

1381556496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381556496 is an abundant number, since it is smaller than the sum of its proper divisors (2191054128).

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

1381556496 is a wasteful number, since it uses less digits than its factorization.

1381556496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28959 (or 28953 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 1381556496 is about 37169.2950699902. The cubic root of 1381556496 is about 1113.7546999667.

The spelling of 1381556496 in words is "one billion, three hundred eighty-one million, five hundred fifty-six thousand, four hundred ninety-six".