381593340 has 72 divisors (see below), whose sum is σ = 1218431760. Its totient is φ = 96401664.

The previous prime is 381593327. The next prime is 381593357. The reversal of 381593340 is 43395183.

381593340 is a `hidden beast` number, since 38 + 1 + 593 + 34 + 0 = 666.

It is a super-2 number, since 2×381593340² = 291226954264711200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 381593295 and 381593304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52369 + ... + 59208.

Almost surely, 2^381593340 is an apocalyptic number.

381593340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381593340 is an abundant number, since it is smaller than the sum of its proper divisors (836838420).

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

381593340 is a wasteful number, since it uses less digits than its factorization.

381593340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111611 (or 111606 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 381593340 is about 19534.4142476809. The cubic root of 381593340 is about 725.3265845328.

The spelling of 381593340 in words is "three hundred eighty-one million, five hundred ninety-three thousand, three hundred forty".