381274845 has 64 divisors (see below), whose sum is σ = 717133824. Its totient is φ = 169378560.

The previous prime is 381274837. The next prime is 381274877. The reversal of 381274845 is 548472183.

It is not a de Polignac number, because 381274845 - 2³ = 381274837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381274797 and 381274806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 728754 + ... + 729276.

It is an arithmetic number, because the mean of its divisors is an integer number (11205216).

Almost surely, 2^381274845 is an apocalyptic number.

381274845 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381274845 is a deficient number, since it is larger than the sum of its proper divisors (335858979).

381274845 is a wasteful number, since it uses less digits than its factorization.

381274845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its digits is 215040, while the sum is 42.

The square root of 381274845 is about 19526.2603946583. The cubic root of 381274845 is about 725.1247316112.

The spelling of 381274845 in words is "three hundred eighty-one million, two hundred seventy-four thousand, eight hundred forty-five".