1516654945 has 8 divisors (see below), whose sum is σ = 1959984936. Its totient is φ = 1119991296.

The previous prime is 1516654921. The next prime is 1516654961. The reversal of 1516654945 is 5494566151.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 303317056 + 1213337889 = 17416^2 + 34833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1516654945 - 2⁷ = 1516654817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1516654895 and 1516654904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11666512 + ... + 11666641.

It is an arithmetic number, because the mean of its divisors is an integer number (244998117).

Almost surely, 2^1516654945 is an apocalyptic number.

It is an amenable number.

1516654945 is a deficient number, since it is larger than the sum of its proper divisors (443329991).

1516654945 is a wasteful number, since it uses less digits than its factorization.

1516654945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23333171.

The product of its digits is 648000, while the sum is 46.

The square root of 1516654945 is about 38944.2543258951. The cubic root of 1516654945 is about 1148.9353587312.

The spelling of 1516654945 in words is "one billion, five hundred sixteen million, six hundred fifty-four thousand, nine hundred forty-five".