618720118 has 4 divisors (see below), whose sum is σ = 928080180. Its totient is φ = 309360058.

The previous prime is 618720101. The next prime is 618720119. The reversal of 618720118 is 811027816.

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 (618720119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154680028 + ... + 154680031.

It is an arithmetic number, because the mean of its divisors is an integer number (232020045).

Almost surely, 2^618720118 is an apocalyptic number.

618720118 is a deficient number, since it is larger than the sum of its proper divisors (309360062).

618720118 is a wasteful number, since it uses less digits than its factorization.

618720118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309360061.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 618720118 is about 24874.0852696134. The cubic root of 618720118 is about 852.1147426044.

The spelling of 618720118 in words is "six hundred eighteen million, seven hundred twenty thousand, one hundred eighteen".