1612336645 has 16 divisors (see below), whose sum is σ = 1987441920. Its totient is φ = 1255096384.

The previous prime is 1612336633. The next prime is 1612336651. The reversal of 1612336645 is 5466332161.

It is a cyclic number.

It is not a de Polignac number, because 1612336645 - 2⁵ = 1612336613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20826 + ... + 60484.

It is an arithmetic number, because the mean of its divisors is an integer number (124215120).

Almost surely, 2^1612336645 is an apocalyptic number.

It is an amenable number.

1612336645 is a deficient number, since it is larger than the sum of its proper divisors (375105275).

1612336645 is a wasteful number, since it uses less digits than its factorization.

1612336645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39884.

The product of its digits is 77760, while the sum is 37.

The square root of 1612336645 is about 40153.9119513902. The cubic root of 1612336645 is about 1172.6054496656.

The spelling of 1612336645 in words is "one billion, six hundred twelve million, three hundred thirty-six thousand, six hundred forty-five".