381161125 has 8 divisors (see below), whose sum is σ = 475689240. Its totient is φ = 304928800.

The previous prime is 381161113. The next prime is 381161153. The reversal of 381161125 is 521161183.

It can be written as a sum of positive squares in 4 ways, for example, as 5692996 + 375468129 = 2386^2 + 19377^2 .

It is not a de Polignac number, because 381161125 - 2²¹ = 379063973 is a prime.

It is a super-2 number, since 2×381161125² = 290567606422531250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 381161093 and 381161102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524520 + ... + 1524769.

It is an arithmetic number, because the mean of its divisors is an integer number (59461155).

Almost surely, 2^381161125 is an apocalyptic number.

It is an amenable number.

381161125 is a deficient number, since it is larger than the sum of its proper divisors (94528115).

381161125 is an equidigital number, since it uses as much as digits as its factorization.

381161125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049304 (or 3049294 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 381161125 is about 19523.3482015765. The cubic root of 381161125 is about 725.0526319301.

The spelling of 381161125 in words is "three hundred eighty-one million, one hundred sixty-one thousand, one hundred twenty-five".