1516740666 has 32 divisors (see below), whose sum is σ = 3540602880. Its totient is φ = 424133616.

The previous prime is 1516740653. The next prime is 1516740737. The reversal of 1516740666 is 6660476151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382206 + ... + 386153.

It is an arithmetic number, because the mean of its divisors is an integer number (110643840).

Almost surely, 2^1516740666 is an apocalyptic number.

1516740666 is an abundant number, since it is smaller than the sum of its proper divisors (2023862214).

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

1516740666 is a wasteful number, since it uses less digits than its factorization.

1516740666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768418.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1516740666 is about 38945.3548706389. The cubic root of 1516740666 is about 1148.9570041804.

The spelling of 1516740666 in words is "one billion, five hundred sixteen million, seven hundred forty thousand, six hundred sixty-six".