618567945 has 8 divisors (see below), whose sum is σ = 989708736. Its totient is φ = 329902896.

The previous prime is 618567913. The next prime is 618567947. The reversal of 618567945 is 549765816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 618567945 - 2⁵ = 618567913 is a prime.

It is a super-3 number, since 3×618567945³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (618567947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20618917 + ... + 20618946.

It is an arithmetic number, because the mean of its divisors is an integer number (123713592).

Almost surely, 2^618567945 is an apocalyptic number.

It is an amenable number.

618567945 is a deficient number, since it is larger than the sum of its proper divisors (371140791).

618567945 is a wasteful number, since it uses less digits than its factorization.

618567945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41237871.

The product of its digits is 1814400, while the sum is 51.

The square root of 618567945 is about 24871.0262152570. The cubic root of 618567945 is about 852.0448782263.

The spelling of 618567945 in words is "six hundred eighteen million, five hundred sixty-seven thousand, nine hundred forty-five".