381252092 has 12 divisors (see below), whose sum is σ = 718513656. Its totient is φ = 175962480.

The previous prime is 381252031. The next prime is 381252097. The reversal of 381252092 is 290252183.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381252097) 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, 3665834 + ... + 3665937.

It is an arithmetic number, because the mean of its divisors is an integer number (59876138).

Almost surely, 2^381252092 is an apocalyptic number.

It is an amenable number.

381252092 is a deficient number, since it is larger than the sum of its proper divisors (337261564).

381252092 is a wasteful number, since it uses less digits than its factorization.

381252092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331788 (or 7331786 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 381252092 is about 19525.6777603237. The cubic root of 381252092 is about 725.1103071163.

Subtracting from 381252092 its reverse (290252183), we obtain a palindrome (90999909).

The spelling of 381252092 in words is "three hundred eighty-one million, two hundred fifty-two thousand, ninety-two".