366612381 has 6 divisors (see below), whose sum is σ = 529551230. Its totient is φ = 244408248.

The previous prime is 366612347. The next prime is 366612383. The reversal of 366612381 is 183216663.

It can be written as a sum of positive squares in only one way, i.e., 318087225 + 48525156 = 17835^2 + 6966^2 .

It is not a de Polignac number, because 366612381 - 2¹⁴ = 366595997 is a prime.

It is a super-2 number, since 2×366612381² = 268809275804978322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366612383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20367346 + ... + 20367363.

Almost surely, 2^366612381 is an apocalyptic number.

It is an amenable number.

366612381 is a deficient number, since it is larger than the sum of its proper divisors (162938849).

366612381 is a wasteful number, since it uses less digits than its factorization.

366612381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40734715 (or 40734712 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 366612381 is about 19147.1246144167. The cubic root of 366612381 is about 715.7077322427.

The spelling of 366612381 in words is "three hundred sixty-six million, six hundred twelve thousand, three hundred eighty-one".