1516666149 has 12 divisors (see below), whose sum is σ = 2249949676. Its totient is φ = 983783232.

The previous prime is 1516666147. The next prime is 1516666153. The reversal of 1516666149 is 9416666151.

It can be written as a sum of positive squares in 2 ways, for example, as 1364933025 + 151733124 = 36945^2 + 12318^2 .

It is not a de Polignac number, because 1516666149 - 2¹ = 1516666147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516666147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2276944 + ... + 2277609.

Almost surely, 2^1516666149 is an apocalyptic number.

It is an amenable number.

1516666149 is a deficient number, since it is larger than the sum of its proper divisors (733283527).

1516666149 is a wasteful number, since it uses less digits than its factorization.

1516666149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554596 (or 4554593 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1516666149 is about 38944.3981722661. The cubic root of 1516666149 is about 1148.9381879048.

The spelling of 1516666149 in words is "one billion, five hundred sixteen million, six hundred sixty-six thousand, one hundred forty-nine".