1516120722 has 12 divisors (see below), whose sum is σ = 3284928270. Its totient is φ = 505373568.

The previous prime is 1516120709. The next prime is 1516120733. The reversal of 1516120722 is 2270216151.

1516120722 is a `hidden beast` number, since 1 + 516 + 120 + 7 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1466966601 + 49154121 = 38301^2 + 7011^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42114447 + ... + 42114482.

Almost surely, 2^1516120722 is an apocalyptic number.

1516120722 is an abundant number, since it is smaller than the sum of its proper divisors (1768807548).

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

1516120722 is a wasteful number, since it uses less digits than its factorization.

1516120722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84228937 (or 84228934 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1516120722 is about 38937.3949051551. The cubic root of 1516120722 is about 1148.8004434523.

Adding to 1516120722 its reverse (2270216151), we get a palindrome (3786336873).

The spelling of 1516120722 in words is "one billion, five hundred sixteen million, one hundred twenty thousand, seven hundred twenty-two".