381761253 has 12 divisors (see below), whose sum is σ = 551798988. Its totient is φ = 254338560.

The previous prime is 381761207. The next prime is 381761287. The reversal of 381761253 is 352167183.

381761253 is a `hidden beast` number, since 38 + 1 + 7 + 612 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 206410689 + 175350564 = 14367^2 + 13242^2 .

It is not a de Polignac number, because 381761253 - 2²⁰ = 380712677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381761203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1093 + ... + 27653.

It is an arithmetic number, because the mean of its divisors is an integer number (45983249).

Almost surely, 2^381761253 is an apocalyptic number.

It is an amenable number.

381761253 is a deficient number, since it is larger than the sum of its proper divisors (170037735).

381761253 is a wasteful number, since it uses less digits than its factorization.

381761253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28164 (or 28161 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 381761253 is about 19538.7116514882. The cubic root of 381761253 is about 725.4329577233.

The spelling of 381761253 in words is "three hundred eighty-one million, seven hundred sixty-one thousand, two hundred fifty-three".