381081708 has 216 divisors, whose sum is σ = 1198229760. Its totient is φ = 99973440.

The previous prime is 381081691. The next prime is 381081709. The reversal of 381081708 is 807180183.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381081709) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5367313 + ... + 5367383.

It is an arithmetic number, because the mean of its divisors is an integer number (5547360).

Almost surely, 2^381081708 is an apocalyptic number.

381081708 is a gapful number since it is divisible by the number (38) 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 381081708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599114880).

381081708 is an abundant number, since it is smaller than the sum of its proper divisors (817148052).

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

381081708 is a wasteful number, since it uses less digits than its factorization.

381081708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 381081708 is about 19521.3141975636. The cubic root of 381081708 is about 725.0022722085.

The spelling of 381081708 in words is "three hundred eighty-one million, eighty-one thousand, seven hundred eight".