381333740 has 12 divisors (see below), whose sum is σ = 800800896. Its totient is φ = 152533488.

The previous prime is 381333737. The next prime is 381333779. The reversal of 381333740 is 47333183.

It is a junction number, because it is equal to n+sod(n) for n = 381333697 and 381333706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9533324 + ... + 9533363.

It is an arithmetic number, because the mean of its divisors is an integer number (66733408).

Almost surely, 2^381333740 is an apocalyptic number.

It is an amenable number.

381333740 is an abundant number, since it is smaller than the sum of its proper divisors (419467156).

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

381333740 is a wasteful number, since it uses less digits than its factorization.

381333740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19066696 (or 19066694 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 381333740 is about 19527.7684336946. The cubic root of 381333740 is about 725.1620660284.

The spelling of 381333740 in words is "three hundred eighty-one million, three hundred thirty-three thousand, seven hundred forty".