1612444685 has 4 divisors (see below), whose sum is σ = 1934933628. Its totient is φ = 1289955744.

The previous prime is 1612444661. The next prime is 1612444697. The reversal of 1612444685 is 5864442161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5864442161 = 16831 ⋅348431.

It can be written as a sum of positive squares in 2 ways, for example, as 725655844 + 886788841 = 26938^2 + 29779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612444685 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 3 ways as a sum of consecutive naturals, for example, 161244464 + ... + 161244473.

It is an arithmetic number, because the mean of its divisors is an integer number (483733407).

Almost surely, 2^1612444685 is an apocalyptic number.

It is an amenable number.

1612444685 is a deficient number, since it is larger than the sum of its proper divisors (322488943).

1612444685 is an equidigital number, since it uses as much as digits as its factorization.

1612444685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322488942.

The product of its digits is 184320, while the sum is 41.

The square root of 1612444685 is about 40155.2572523200. The cubic root of 1612444685 is about 1172.6316405283.

The spelling of 1612444685 in words is "one billion, six hundred twelve million, four hundred forty-four thousand, six hundred eighty-five".