618114989 has 4 divisors (see below), whose sum is σ = 618566556. Its totient is φ = 617663424.

The previous prime is 618114971. The next prime is 618114997. The reversal of 618114989 is 989411816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 604668100 + 13446889 = 24590^2 + 3667^2 .

It is a cyclic number.

It is not a de Polignac number, because 618114989 - 2²⁰ = 617066413 is a prime.

It is a super-2 number, since 2×618114989² = 764132279252940242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618114089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223724 + ... + 226469.

It is an arithmetic number, because the mean of its divisors is an integer number (154641639).

Almost surely, 2^618114989 is an apocalyptic number.

It is an amenable number.

618114989 is a deficient number, since it is larger than the sum of its proper divisors (451567).

618114989 is a wasteful number, since it uses less digits than its factorization.

618114989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451566.

The product of its digits is 124416, while the sum is 47.

The square root of 618114989 is about 24861.9184497094. The cubic root of 618114989 is about 851.8368530694.

The spelling of 618114989 in words is "six hundred eighteen million, one hundred fourteen thousand, nine hundred eighty-nine".