618540223 has 16 divisors (see below), whose sum is σ = 750968064. Its totient is φ = 497335680.

The previous prime is 618540151. The next prime is 618540239. The reversal of 618540223 is 322045816.

It is a de Polignac number, because none of the positive numbers 2^k-618540223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618540253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28068 + ... + 44998.

It is an arithmetic number, because the mean of its divisors is an integer number (46935504).

Almost surely, 2^618540223 is an apocalyptic number.

618540223 is a deficient number, since it is larger than the sum of its proper divisors (132427841).

618540223 is a wasteful number, since it uses less digits than its factorization.

618540223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17262.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 618540223 is about 24870.4688938508. The cubic root of 618540223 is about 852.0321495028.

The spelling of 618540223 in words is "six hundred eighteen million, five hundred forty thousand, two hundred twenty-three".