618148918 has 4 divisors (see below), whose sum is σ = 927223380. Its totient is φ = 309074458.

The previous prime is 618148913. The next prime is 618148931. The reversal of 618148918 is 819841816.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618148913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154537228 + ... + 154537231.

It is an arithmetic number, because the mean of its divisors is an integer number (231805845).

Almost surely, 2^618148918 is an apocalyptic number.

618148918 is a deficient number, since it is larger than the sum of its proper divisors (309074462).

618148918 is a wasteful number, since it uses less digits than its factorization.

618148918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309074461.

The product of its digits is 110592, while the sum is 46.

The square root of 618148918 is about 24862.6007891371. The cubic root of 618148918 is about 851.8524388662.

The spelling of 618148918 in words is "six hundred eighteen million, one hundred forty-eight thousand, nine hundred eighteen".