381379236 has 96 divisors (see below), whose sum is σ = 1057308672. Its totient is φ = 104699520.

The previous prime is 381379223. The next prime is 381379237. The reversal of 381379236 is 632973183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (381379237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434430 + ... + 435306.

It is an arithmetic number, because the mean of its divisors is an integer number (11013632).

Almost surely, 2^381379236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381379236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528654336).

381379236 is an abundant number, since it is smaller than the sum of its proper divisors (675929436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381379236 is a wasteful number, since it uses less digits than its factorization.

381379236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1087 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 381379236 is about 19528.9333042028. The cubic root of 381379236 is about 725.1909039883.

The spelling of 381379236 in words is "three hundred eighty-one million, three hundred seventy-nine thousand, two hundred thirty-six".