381601161 has 12 divisors (see below), whose sum is σ = 551649280. Its totient is φ = 254194200.

The previous prime is 381601141. The next prime is 381601229. The reversal of 381601161 is 161106183.

It is not a de Polignac number, because 381601161 - 2⁶ = 381601097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381601141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5065 + ... + 28086.

Almost surely, 2^381601161 is an apocalyptic number.

It is an amenable number.

381601161 is a deficient number, since it is larger than the sum of its proper divisors (170048119).

381601161 is a wasteful number, since it uses less digits than its factorization.

381601161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34436 (or 34433 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 381601161 is about 19534.6144318233. The cubic root of 381601161 is about 725.3315398433.

The spelling of 381601161 in words is "three hundred eighty-one million, six hundred one thousand, one hundred sixty-one".