1515226660 has 48 divisors (see below), whose sum is σ = 3515654016. Its totient is φ = 545633792.

The previous prime is 1515226651. The next prime is 1515226663. The reversal of 1515226660 is 666225151.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1515226663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89062 + ... + 104701.

It is an arithmetic number, because the mean of its divisors is an integer number (73242792).

Almost surely, 2^1515226660 is an apocalyptic number.

1515226660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1515226660 is an abundant number, since it is smaller than the sum of its proper divisors (2000427356).

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

1515226660 is a wasteful number, since it uses less digits than its factorization.

1515226660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193812 (or 193810 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1515226660 is about 38925.9124491642. The cubic root of 1515226660 is about 1148.5745817585.

The spelling of 1515226660 in words is "one billion, five hundred fifteen million, two hundred twenty-six thousand, six hundred sixty".