618879347 has 2 divisors, whose sum is σ = 618879348. Its totient is φ = 618879346.

The previous prime is 618879323. The next prime is 618879361. The reversal of 618879347 is 743978816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618879347 - 2¹⁸ = 618617203 is a prime.

It is a super-2 number, since 2×618879347² = 766023292286292818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (618879307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309439673 + 309439674.

It is an arithmetic number, because the mean of its divisors is an integer number (309439674).

Almost surely, 2^618879347 is an apocalyptic number.

618879347 is a deficient number, since it is larger than the sum of its proper divisors (1).

618879347 is an equidigital number, since it uses as much as digits as its factorization.

618879347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 618879347 is about 24877.2857643273. The cubic root of 618879347 is about 852.1878342101.

The spelling of 618879347 in words is "six hundred eighteen million, eight hundred seventy-nine thousand, three hundred forty-seven".