381777776 has 10 divisors (see below), whose sum is σ = 739694472. Its totient is φ = 190888880.

The previous prime is 381777769. The next prime is 381777787. The reversal of 381777776 is 677777183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11930540 + ... + 11930571.

Almost surely, 2^381777776 is an apocalyptic number.

It is an amenable number.

381777776 is a deficient number, since it is larger than the sum of its proper divisors (357916696).

381777776 is a wasteful number, since it uses less digits than its factorization.

381777776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23861119 (or 23861113 counting only the distinct ones).

The product of its digits is 2420208, while the sum is 53.

The square root of 381777776 is about 19539.1344741777. The cubic root of 381777776 is about 725.4434233880.

The spelling of 381777776 in words is "three hundred eighty-one million, seven hundred seventy-seven thousand, seven hundred seventy-six".