381878382 has 16 divisors (see below), whose sum is σ = 764002512. Its totient is φ = 127251840.

The previous prime is 381878381. The next prime is 381878383. The reversal of 381878382 is 283878183.

It is an interprime number because it is at equal distance from previous prime (381878381) and next prime (381878383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381878381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14598 + ... + 31254.

It is an arithmetic number, because the mean of its divisors is an integer number (47750157).

Almost surely, 2^381878382 is an apocalyptic number.

381878382 is an abundant number, since it is smaller than the sum of its proper divisors (382124130).

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

381878382 is a wasteful number, since it uses less digits than its factorization.

381878382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20483.

The product of its digits is 516096, while the sum is 48.

The square root of 381878382 is about 19541.7087789170. The cubic root of 381878382 is about 725.5071406913.

The spelling of 381878382 in words is "three hundred eighty-one million, eight hundred seventy-eight thousand, three hundred eighty-two".