361340181 has 6 divisors (see below), whose sum is σ = 521935830. Its totient is φ = 240893448.

The previous prime is 361340159. The next prime is 361340191. The reversal of 361340181 is 181043163.

361340181 is a `hidden beast` number, since 3 + 613 + 40 + 1 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 286794225 + 74545956 = 16935^2 + 8634^2 .

It is not a de Polignac number, because 361340181 - 2¹⁰ = 361339157 is a prime.

It is a super-2 number, since 2×361340181² = 261133452810225522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361340101) 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, 20074446 + ... + 20074463.

It is an arithmetic number, because the mean of its divisors is an integer number (86989305).

Almost surely, 2^361340181 is an apocalyptic number.

It is an amenable number.

361340181 is a deficient number, since it is larger than the sum of its proper divisors (160595649).

361340181 is a wasteful number, since it uses less digits than its factorization.

361340181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40148915 (or 40148912 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 361340181 is about 19008.9500236073. The cubic root of 361340181 is about 712.2603234475.

The spelling of 361340181 in words is "three hundred sixty-one million, three hundred forty thousand, one hundred eighty-one".