722100018 has 16 divisors (see below), whose sum is σ = 1446132096. Its totient is φ = 240378000.

The previous prime is 722100017. The next prime is 722100023. The reversal of 722100018 is 810001227.

722100018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 722099967 and 722100003.

It is not an unprimeable number, because it can be changed into a prime (722100017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75621 + ... + 84632.

It is an arithmetic number, because the mean of its divisors is an integer number (90383256).

Almost surely, 2^722100018 is an apocalyptic number.

722100018 is an abundant number, since it is smaller than the sum of its proper divisors (724032078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722100018 is a wasteful number, since it uses less digits than its factorization.

722100018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161009.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 722100018 is about 26871.9187629019. The cubic root of 722100018 is about 897.1514952132.

The spelling of 722100018 in words is "seven hundred twenty-two million, one hundred thousand, eighteen".