618134791 has 4 divisors (see below), whose sum is σ = 618185800. Its totient is φ = 618083784.

The previous prime is 618134717. The next prime is 618134801. The reversal of 618134791 is 197431816.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 618134791 - 2¹³ = 618126599 is a prime.

It is a super-2 number, since 2×618134791² = 764181239689227362, 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 (618134701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4225 + ... + 35413.

It is an arithmetic number, because the mean of its divisors is an integer number (154546450).

Almost surely, 2^618134791 is an apocalyptic number.

618134791 is a deficient number, since it is larger than the sum of its proper divisors (51009).

618134791 is a wasteful number, since it uses less digits than its factorization.

618134791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51008.

The product of its digits is 36288, while the sum is 40.

The square root of 618134791 is about 24862.3166861015. The cubic root of 618134791 is about 851.8459494854.

The spelling of 618134791 in words is "six hundred eighteen million, one hundred thirty-four thousand, seven hundred ninety-one".