381696741 has 6 divisors (see below), whose sum is σ = 551339750. Its totient is φ = 254464488.

The previous prime is 381696709. The next prime is 381696751. The reversal of 381696741 is 147696183.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 213890625 + 167806116 = 14625^2 + 12954^2 .

It is not a de Polignac number, because 381696741 - 2⁵ = 381696709 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381696751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21205366 + ... + 21205383.

Almost surely, 2^381696741 is an apocalyptic number.

It is an amenable number.

381696741 is a deficient number, since it is larger than the sum of its proper divisors (169643009).

381696741 is a wasteful number, since it uses less digits than its factorization.

381696741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42410755 (or 42410752 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 381696741 is about 19537.0607052340. The cubic root of 381696741 is about 725.3920929446.

The spelling of 381696741 in words is "three hundred eighty-one million, six hundred ninety-six thousand, seven hundred forty-one".