381248646 has 16 divisors (see below), whose sum is σ = 769494000. Its totient is φ = 125916768.

The previous prime is 381248617. The next prime is 381248653. The reversal of 381248646 is 646842183.

It is a junction number, because it is equal to n+sod(n) for n = 381248598 and 381248607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290821 + ... + 292128.

It is an arithmetic number, because the mean of its divisors is an integer number (48093375).

Almost surely, 2^381248646 is an apocalyptic number.

381248646 is an abundant number, since it is smaller than the sum of its proper divisors (388245354).

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

381248646 is a wasteful number, since it uses less digits than its factorization.

381248646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583063.

The product of its digits is 221184, while the sum is 42.

The square root of 381248646 is about 19525.5895173488. The cubic root of 381248646 is about 725.1081224396.

The spelling of 381248646 in words is "three hundred eighty-one million, two hundred forty-eight thousand, six hundred forty-six".