619478231 has 2 divisors, whose sum is σ = 619478232. Its totient is φ = 619478230.

The previous prime is 619478207. The next prime is 619478273. The reversal of 619478231 is 132874916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 619478231 - 2²² = 615283927 is a prime.

It is a super-2 number, since 2×619478231² = 767506557365778722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619474231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309739115 + 309739116.

It is an arithmetic number, because the mean of its divisors is an integer number (309739116).

Almost surely, 2^619478231 is an apocalyptic number.

619478231 is a deficient number, since it is larger than the sum of its proper divisors (1).

619478231 is an equidigital number, since it uses as much as digits as its factorization.

619478231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 619478231 is about 24889.3196170566. The cubic root of 619478231 is about 852.4626304342.

The spelling of 619478231 in words is "six hundred nineteen million, four hundred seventy-eight thousand, two hundred thirty-one".