381782152 has 16 divisors (see below), whose sum is σ = 746965440. Its totient is φ = 182591376.

The previous prime is 381782131. The next prime is 381782153. The reversal of 381782152 is 251287183.

It is a super-2 number, since 2×381782152² = 291515223171502208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381782153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037268 + ... + 1037635.

It is an arithmetic number, because the mean of its divisors is an integer number (46685340).

Almost surely, 2^381782152 is an apocalyptic number.

It is an amenable number.

381782152 is a deficient number, since it is larger than the sum of its proper divisors (365183288).

381782152 is a wasteful number, since it uses less digits than its factorization.

381782152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074932 (or 2074928 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 381782152 is about 19539.2464542520. The cubic root of 381782152 is about 725.4461950949.

The spelling of 381782152 in words is "three hundred eighty-one million, seven hundred eighty-two thousand, one hundred fifty-two".