381853560 has 64 divisors (see below), whose sum is σ = 1249706880. Its totient is φ = 92570240.

The previous prime is 381853559. The next prime is 381853561. The reversal of 381853560 is 65358183.

It is an interprime number because it is at equal distance from previous prime (381853559) and next prime (381853561).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381853561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143322 + ... + 145961.

It is an arithmetic number, because the mean of its divisors is an integer number (19526670).

Almost surely, 2^381853560 is an apocalyptic number.

381853560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381853560 is an abundant number, since it is smaller than the sum of its proper divisors (867853320).

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

381853560 is a wasteful number, since it uses less digits than its factorization.

381853560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289308 (or 289304 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 381853560 is about 19541.0736654873. The cubic root of 381853560 is about 725.4914210894.

The spelling of 381853560 in words is "three hundred eighty-one million, eight hundred fifty-three thousand, five hundred sixty".