618928747 has 2 divisors, whose sum is σ = 618928748. Its totient is φ = 618928746.

The previous prime is 618928727. The next prime is 618928763. The reversal of 618928747 is 747829816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618928747 - 2⁷ = 618928619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618928694 and 618928703.

It is not a weakly prime, because it can be changed into another prime (618928727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309464373 + 309464374.

It is an arithmetic number, because the mean of its divisors is an integer number (309464374).

Almost surely, 2^618928747 is an apocalyptic number.

618928747 is a deficient number, since it is larger than the sum of its proper divisors (1).

618928747 is an equidigital number, since it uses as much as digits as its factorization.

618928747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 52.

The square root of 618928747 is about 24878.2786181038. The cubic root of 618928747 is about 852.2105079667.

The spelling of 618928747 in words is "six hundred eighteen million, nine hundred twenty-eight thousand, seven hundred forty-seven".