1308381000 has 64 divisors (see below), whose sum is σ = 4082158080. Its totient is φ = 348900800.

The previous prime is 1308380963. The next prime is 1308381001. The reversal of 1308381000 is 1838031.

It is a super-2 number, since 2×1308381000² = 3423721682322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1308381001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215064 + ... + 221063.

It is an arithmetic number, because the mean of its divisors is an integer number (63783720).

Almost surely, 2^1308381000 is an apocalyptic number.

1308381000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1308381000 is an abundant number, since it is smaller than the sum of its proper divisors (2773777080).

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

1308381000 is a wasteful number, since it uses less digits than its factorization.

1308381000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436151 (or 436137 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1308381000 is about 36171.5495935687. The cubic root of 1308381000 is about 1093.7332362056.

The spelling of 1308381000 in words is "one billion, three hundred eight million, three hundred eighty-one thousand".