618434822 has 4 divisors (see below), whose sum is σ = 927652236. Its totient is φ = 309217410.

The previous prime is 618434821. The next prime is 618434837. The reversal of 618434822 is 228434816.

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 (618434821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154608704 + ... + 154608707.

It is an arithmetic number, because the mean of its divisors is an integer number (231913059).

Almost surely, 2^618434822 is an apocalyptic number.

618434822 is a deficient number, since it is larger than the sum of its proper divisors (309217414).

618434822 is a wasteful number, since it uses less digits than its factorization.

618434822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309217413.

The product of its digits is 73728, while the sum is 38.

The square root of 618434822 is about 24868.3498045206. The cubic root of 618434822 is about 851.9837505258.

The spelling of 618434822 in words is "six hundred eighteen million, four hundred thirty-four thousand, eight hundred twenty-two".