381252165 has 16 divisors (see below), whose sum is σ = 697147008. Its totient is φ = 174286656.

The previous prime is 381252143. The next prime is 381252187. The reversal of 381252165 is 561252183.

It is an interprime number because it is at equal distance from previous prime (381252143) and next prime (381252187).

It is not a de Polignac number, because 381252165 - 2⁹ = 381251653 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815382 + ... + 1815591.

It is an arithmetic number, because the mean of its divisors is an integer number (43571688).

Almost surely, 2^381252165 is an apocalyptic number.

381252165 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381252165 is a deficient number, since it is larger than the sum of its proper divisors (315894843).

381252165 is a wasteful number, since it uses less digits than its factorization.

381252165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630988.

The product of its digits is 14400, while the sum is 33.

The square root of 381252165 is about 19525.6796296569. The cubic root of 381252165 is about 725.1103533963.

The spelling of 381252165 in words is "three hundred eighty-one million, two hundred fifty-two thousand, one hundred sixty-five".