381333788 has 24 divisors (see below), whose sum is σ = 728548464. Its totient is φ = 173203200.

The previous prime is 381333787. The next prime is 381333793. The reversal of 381333788 is 887333183.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381333787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79556 + ... + 84212.

It is an arithmetic number, because the mean of its divisors is an integer number (30356186).

Almost surely, 2^381333788 is an apocalyptic number.

It is an amenable number.

381333788 is a deficient number, since it is larger than the sum of its proper divisors (347214676).

381333788 is a wasteful number, since it uses less digits than its factorization.

381333788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6533 (or 6531 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 381333788 is about 19527.7696627137. The cubic root of 381333788 is about 725.1620964547.

The spelling of 381333788 in words is "three hundred eighty-one million, three hundred thirty-three thousand, seven hundred eighty-eight".