1516011665 has 16 divisors (see below), whose sum is σ = 2084548608. Its totient is φ = 1036827456.

The previous prime is 1516011661. The next prime is 1516011697. The reversal of 1516011665 is 5661106151.

It is not a de Polignac number, because 1516011665 - 2² = 1516011661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1516011661) 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, 43142 + ... + 69951.

It is an arithmetic number, because the mean of its divisors is an integer number (130284288).

Almost surely, 2^1516011665 is an apocalyptic number.

It is an amenable number.

1516011665 is a deficient number, since it is larger than the sum of its proper divisors (568536943).

1516011665 is a wasteful number, since it uses less digits than its factorization.

1516011665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113488.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1516011665 is about 38935.9944652760. The cubic root of 1516011665 is about 1148.7728977712.

The spelling of 1516011665 in words is "one billion, five hundred sixteen million, eleven thousand, six hundred sixty-five".