4618815997 has 2 divisors, whose sum is σ = 4618815998. Its totient is φ = 4618815996.

The previous prime is 4618815991. The next prime is 4618816049. The reversal of 4618815997 is 7995188164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3580107556 + 1038708441 = 59834^2 + 32229^2 .

It is a cyclic number.

It is not a de Polignac number, because 4618815997 - 2⁷ = 4618815869 is a prime.

It is a super-2 number, since 2×4618815997² = 42666922428286208018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4618815991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2309407998 + 2309407999.

It is an arithmetic number, because the mean of its divisors is an integer number (2309407999).

Almost surely, 2^4618815997 is an apocalyptic number.

It is an amenable number.

4618815997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4618815997 is an equidigital number, since it uses as much as digits as its factorization.

4618815997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 58.

The square root of 4618815997 is about 67961.8716413843. The cubic root of 4618815997 is about 1665.3680191227.

The spelling of 4618815997 in words is "four billion, six hundred eighteen million, eight hundred fifteen thousand, nine hundred ninety-seven".