369113021 has 2 divisors, whose sum is σ = 369113022. Its totient is φ = 369113020.

The previous prime is 369112987. The next prime is 369113023. The reversal of 369113021 is 120311963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252364996 + 116748025 = 15886^2 + 10805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-369113021 is a prime.

It is a Sophie Germain prime.

Together with 369113023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (369113023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184556510 + 184556511.

It is an arithmetic number, because the mean of its divisors is an integer number (184556511).

Almost surely, 2^369113021 is an apocalyptic number.

It is an amenable number.

369113021 is a deficient number, since it is larger than the sum of its proper divisors (1).

369113021 is an equidigital number, since it uses as much as digits as its factorization.

369113021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 369113021 is about 19212.3143061943. The cubic root of 369113021 is about 717.3313121873.

Adding to 369113021 its reverse (120311963), we get a palindrome (489424984).

The spelling of 369113021 in words is "three hundred sixty-nine million, one hundred thirteen thousand, twenty-one".