1516671563 has 16 divisors (see below), whose sum is σ = 1686410880. Its totient is φ = 1352419200.

The previous prime is 1516671521. The next prime is 1516671571. The reversal of 1516671563 is 3651766151.

It is a happy number.

It is not a de Polignac number, because 1516671563 - 2⁸ = 1516671307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1516671563.

It is not an unprimeable number, because it can be changed into a prime (1516676563) 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, 173348 + ... + 181886.

It is an arithmetic number, because the mean of its divisors is an integer number (105400680).

Almost surely, 2^1516671563 is an apocalyptic number.

1516671563 is a deficient number, since it is larger than the sum of its proper divisors (169739317).

1516671563 is a wasteful number, since it uses less digits than its factorization.

1516671563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858.

The product of its digits is 113400, while the sum is 41.

The square root of 1516671563 is about 38944.4676815591. The cubic root of 1516671563 is about 1148.9395550138.

The spelling of 1516671563 in words is "one billion, five hundred sixteen million, six hundred seventy-one thousand, five hundred sixty-three".