381595011 has 16 divisors (see below), whose sum is σ = 586627584. Its totient is φ = 216123264.

The previous prime is 381595007. The next prime is 381595033. The reversal of 381595011 is 110595183.

It is not a de Polignac number, because 381595011 - 2² = 381595007 is a prime.

It is a super-2 number, since 2×381595011² = 291229504840180242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381595211) 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 15 ways as a sum of consecutive naturals, for example, 78031 + ... + 82776.

It is an arithmetic number, because the mean of its divisors is an integer number (36664224).

Almost surely, 2^381595011 is an apocalyptic number.

381595011 is a deficient number, since it is larger than the sum of its proper divisors (205032573).

381595011 is a wasteful number, since it uses less digits than its factorization.

381595011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160930.

The product of its (nonzero) digits is 5400, while the sum is 33.

The square root of 381595011 is about 19534.4570183049. The cubic root of 381595011 is about 725.3276432681.

The spelling of 381595011 in words is "three hundred eighty-one million, five hundred ninety-five thousand, eleven".