366365381 has 8 divisors (see below), whose sum is σ = 388243800. Its totient is φ = 345103360.

The previous prime is 366365371. The next prime is 366365383. The reversal of 366365381 is 183563663.

366365381 = 13534² + 13535².

It can be written as a sum of positive squares in 4 ways, for example, as 21669025 + 344696356 = 4655^2 + 18566^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 366365381 - 2¹⁸ = 366103237 is a prime.

It is a super-2 number, since 2×366365381² = 268447184790550322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366365383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152876 + ... + 155253.

It is an arithmetic number, because the mean of its divisors is an integer number (48530475).

Almost surely, 2^366365381 is an apocalyptic number.

366365381 is the 13535-th centered square number.

It is an amenable number.

366365381 is a deficient number, since it is larger than the sum of its proper divisors (21878419).

366365381 is a wasteful number, since it uses less digits than its factorization.

366365381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308199.

The product of its digits is 233280, while the sum is 41.

The square root of 366365381 is about 19140.6734729998. The cubic root of 366365381 is about 715.5469634172.

The spelling of 366365381 in words is "three hundred sixty-six million, three hundred sixty-five thousand, three hundred eighty-one".