381077768 has 8 divisors (see below), whose sum is σ = 714520830. Its totient is φ = 190538880.

The previous prime is 381077759. The next prime is 381077771. The reversal of 381077768 is 867770183.

It can be written as a sum of positive squares in only one way, i.e., 213685924 + 167391844 = 14618^2 + 12938^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23817353 + ... + 23817368.

Almost surely, 2^381077768 is an apocalyptic number.

It is an amenable number.

381077768 is a deficient number, since it is larger than the sum of its proper divisors (333443062).

381077768 is a wasteful number, since it uses less digits than its factorization.

381077768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47634727 (or 47634723 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 381077768 is about 19521.2132819659. The cubic root of 381077768 is about 724.9997736028. Note that the first 3 decimals are identical.

The spelling of 381077768 in words is "three hundred eighty-one million, seventy-seven thousand, seven hundred sixty-eight".