381909096 has 96 divisors (see below), whose sum is σ = 1079998920. Its totient is φ = 121804800.

The previous prime is 381909083. The next prime is 381909107. The reversal of 381909096 is 690909183.

It can be written as a sum of positive squares in 4 ways, for example, as 187306596 + 194602500 = 13686^2 + 13950^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155236 + ... + 157676.

Almost surely, 2^381909096 is an apocalyptic number.

381909096 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381909096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539999460).

381909096 is an abundant number, since it is smaller than the sum of its proper divisors (698089824).

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

381909096 is a wasteful number, since it uses less digits than its factorization.

381909096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2540 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 381909096 is about 19542.4946206977. The cubic root of 381909096 is about 725.5265907135.

The spelling of 381909096 in words is "three hundred eighty-one million, nine hundred nine thousand, ninety-six".