1381856330 has 32 divisors (see below), whose sum is σ = 2600294400. Its totient is φ = 527731072.

The previous prime is 1381856323. The next prime is 1381856383. The reversal of 1381856330 is 336581831.

It is a super-2 number, since 2×1381856330² = 3819053833522137800, which contains 22 as substring.

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, 125591 + ... + 136149.

It is an arithmetic number, because the mean of its divisors is an integer number (81259200).

Almost surely, 2^1381856330 is an apocalyptic number.

1381856330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381856330 is a deficient number, since it is larger than the sum of its proper divisors (1218438070).

1381856330 is a wasteful number, since it uses less digits than its factorization.

1381856330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11158.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1381856330 is about 37173.3282071972. The cubic root of 1381856330 is about 1113.8352654672.

The spelling of 1381856330 in words is "one billion, three hundred eighty-one million, eight hundred fifty-six thousand, three hundred thirty".