918631319 has 2 divisors, whose sum is σ = 918631320. Its totient is φ = 918631318.

The previous prime is 918631313. The next prime is 918631321. The reversal of 918631319 is 913136819.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 918631319 - 2⁴ = 918631303 is a prime.

It is a super-2 number, since 2×918631319² = 1687767000495359522, which contains 22 as substring.

Together with 918631321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918631313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459315659 + 459315660.

It is an arithmetic number, because the mean of its divisors is an integer number (459315660).

Almost surely, 2^918631319 is an apocalyptic number.

918631319 is a deficient number, since it is larger than the sum of its proper divisors (1).

918631319 is an equidigital number, since it uses as much as digits as its factorization.

918631319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 918631319 is about 30308.9313404481. The cubic root of 918631319 is about 972.1062811043.

The spelling of 918631319 in words is "nine hundred eighteen million, six hundred thirty-one thousand, three hundred nineteen".