1516721060 has 24 divisors (see below), whose sum is σ = 3192488376. Its totient is φ = 605283840.

The previous prime is 1516721051. The next prime is 1516721071. The reversal of 1516721060 is 601276151.

It can be written as a sum of positive squares in 4 ways, for example, as 191324224 + 1325396836 = 13832^2 + 36406^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78911 + ... + 96230.

It is an arithmetic number, because the mean of its divisors is an integer number (133020349).

Almost surely, 2^1516721060 is an apocalyptic number.

1516721060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1516721060 is an abundant number, since it is smaller than the sum of its proper divisors (1675767316).

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

1516721060 is a wasteful number, since it uses less digits than its factorization.

1516721060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175583 (or 175581 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1516721060 is about 38945.1031581635. The cubic root of 1516721060 is about 1148.9520535322.

The spelling of 1516721060 in words is "one billion, five hundred sixteen million, seven hundred twenty-one thousand, sixty".