1516451975 has 12 divisors (see below), whose sum is σ = 1924132056. Its totient is φ = 1184947680.

The previous prime is 1516451899. The next prime is 1516452001. The reversal of 1516451975 is 5791546151.

It is not a de Polignac number, because 1516451975 - 2²⁰ = 1515403399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 704252 + ... + 706401.

It is an arithmetic number, because the mean of its divisors is an integer number (160344338).

Almost surely, 2^1516451975 is an apocalyptic number.

1516451975 is a deficient number, since it is larger than the sum of its proper divisors (407680081).

1516451975 is a wasteful number, since it uses less digits than its factorization.

1516451975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410706 (or 1410701 counting only the distinct ones).

The product of its digits is 189000, while the sum is 44.

The square root of 1516451975 is about 38941.6483343990. The cubic root of 1516451975 is about 1148.8841034311.

The spelling of 1516451975 in words is "one billion, five hundred sixteen million, four hundred fifty-one thousand, nine hundred seventy-five".