1381333830 has 32 divisors (see below), whose sum is σ = 3327544800. Its totient is φ = 366984192.

The previous prime is 1381333799. The next prime is 1381333843. The reversal of 1381333830 is 383331831.

It is a junction number, because it is equal to n+sod(n) for n = 1381333791 and 1381333800.

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, 77515 + ... + 93654.

It is an arithmetic number, because the mean of its divisors is an integer number (103985775).

Almost surely, 2^1381333830 is an apocalyptic number.

1381333830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381333830 is an abundant number, since it is smaller than the sum of its proper divisors (1946210970).

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

1381333830 is a wasteful number, since it uses less digits than its factorization.

1381333830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171448.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1381333830 is about 37166.2996543912. The cubic root of 1381333830 is about 1113.6948619919.

The spelling of 1381333830 in words is "one billion, three hundred eighty-one million, three hundred thirty-three thousand, eight hundred thirty".