5206890618 has 24 divisors (see below), whose sum is σ = 11315086068. Its totient is φ = 1730477952.

The previous prime is 5206890613. The next prime is 5206890641. The reversal of 5206890618 is 8160986025.

5206890618 is a `hidden beast` number, since 5 + 20 + 6 + 8 + 9 + 0 + 618 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4653559089 + 553331529 = 68217^2 + 23523^2 .

It is a super-2 number, since 2×5206890618² = 54223419815632843848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5206890613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423121 + ... + 435252.

Almost surely, 2^5206890618 is an apocalyptic number.

5206890618 is an abundant number, since it is smaller than the sum of its proper divisors (6108195450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5206890618 is a wasteful number, since it uses less digits than its factorization.

5206890618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858718 (or 858715 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 5206890618 is about 72158.7875313880. The cubic root of 5206890618 is about 1733.2431194254.

The spelling of 5206890618 in words is "five billion, two hundred six million, eight hundred ninety thousand, six hundred eighteen".