381349652 has 12 divisors (see below), whose sum is σ = 690374580. Its totient is φ = 184099776.

The previous prime is 381349601. The next prime is 381349667. The reversal of 381349652 is 256943183.

It can be written as a sum of positive squares in 2 ways, for example, as 96550276 + 284799376 = 9826^2 + 16876^2 .

It is a super-2 number, since 2×381349652² = 290855114161042208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1643633 + ... + 1643864.

It is an arithmetic number, because the mean of its divisors is an integer number (57531215).

Almost surely, 2^381349652 is an apocalyptic number.

It is an amenable number.

381349652 is a deficient number, since it is larger than the sum of its proper divisors (309024928).

381349652 is a wasteful number, since it uses less digits than its factorization.

381349652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287530 (or 3287528 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 381349652 is about 19528.1758492697. The cubic root of 381349652 is about 725.1721522224.

The spelling of 381349652 in words is "three hundred eighty-one million, three hundred forty-nine thousand, six hundred fifty-two".