722513181 has 16 divisors (see below), whose sum is σ = 1038847040. Its totient is φ = 444026880.

The previous prime is 722513167. The next prime is 722513213. The reversal of 722513181 is 181315227.

It is not a de Polignac number, because 722513181 - 2⁶ = 722513117 is a prime.

It is a super-2 number, since 2×722513181² = 1044050593437477522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722513131) 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, 17946 + ... + 42036.

It is an arithmetic number, because the mean of its divisors is an integer number (64927940).

Almost surely, 2^722513181 is an apocalyptic number.

It is an amenable number.

722513181 is a deficient number, since it is larger than the sum of its proper divisors (316333859).

722513181 is a wasteful number, since it uses less digits than its factorization.

722513181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24876.

The product of its digits is 3360, while the sum is 30.

The square root of 722513181 is about 26879.6052984414. The cubic root of 722513181 is about 897.3225699125.

The spelling of 722513181 in words is "seven hundred twenty-two million, five hundred thirteen thousand, one hundred eighty-one".