381071777 has 4 divisors (see below), whose sum is σ = 381335856. Its totient is φ = 380807700.

The previous prime is 381071773. The next prime is 381071783. The reversal of 381071777 is 777170183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381071777 - 2² = 381071773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381071773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129863 + ... + 132764.

It is an arithmetic number, because the mean of its divisors is an integer number (95333964).

Almost surely, 2^381071777 is an apocalyptic number.

It is an amenable number.

381071777 is a deficient number, since it is larger than the sum of its proper divisors (264079).

381071777 is a wasteful number, since it uses less digits than its factorization.

381071777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264078.

The product of its (nonzero) digits is 57624, while the sum is 41.

The square root of 381071777 is about 19521.0598329087. The cubic root of 381071777 is about 724.9959742939.

The spelling of 381071777 in words is "three hundred eighty-one million, seventy-one thousand, seven hundred seventy-seven".