381349648 has 10 divisors (see below), whose sum is σ = 738864974. Its totient is φ = 190674816.

The previous prime is 381349601. The next prime is 381349667. The reversal of 381349648 is 846943183.

381349648 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 379782144 + 1567504 = 19488^2 + 1252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381349598 and 381349607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11917161 + ... + 11917192.

Almost surely, 2^381349648 is an apocalyptic number.

It is an amenable number.

381349648 is a deficient number, since it is larger than the sum of its proper divisors (357515326).

381349648 is a wasteful number, since it uses less digits than its factorization.

381349648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23834361 (or 23834355 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 381349648 is about 19528.1757468536. The cubic root of 381349648 is about 725.1721496870.

The spelling of 381349648 in words is "three hundred eighty-one million, three hundred forty-nine thousand, six hundred forty-eight".