381018933 has 24 divisors (see below), whose sum is σ = 566914400. Its totient is φ = 246413664.

The previous prime is 381018931. The next prime is 381018941. The reversal of 381018933 is 339810183.

It is not a de Polignac number, because 381018933 - 2¹ = 381018931 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381018931) 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 23 ways as a sum of consecutive naturals, for example, 124698 + ... + 127716.

Almost surely, 2^381018933 is an apocalyptic number.

It is an amenable number.

381018933 is a deficient number, since it is larger than the sum of its proper divisors (185895467).

381018933 is a wasteful number, since it uses less digits than its factorization.

381018933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441 (or 3438 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 381018933 is about 19519.7062734048. The cubic root of 381018933 is about 724.9624605216.

The spelling of 381018933 in words is "three hundred eighty-one million, eighteen thousand, nine hundred thirty-three".