1612408885 has 4 divisors (see below), whose sum is σ = 1934890668. Its totient is φ = 1289927104.

The previous prime is 1612408873. The next prime is 1612408901. The reversal of 1612408885 is 5888042161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5888042161 = 83 ⋅70940267.

It can be written as a sum of positive squares in 2 ways, for example, as 647498916 + 964909969 = 25446^2 + 31063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612408885 - 2⁹ = 1612408373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161240884 + ... + 161240893.

It is an arithmetic number, because the mean of its divisors is an integer number (483722667).

Almost surely, 2^1612408885 is an apocalyptic number.

It is an amenable number.

1612408885 is a deficient number, since it is larger than the sum of its proper divisors (322481783).

1612408885 is an equidigital number, since it uses as much as digits as its factorization.

1612408885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322481782.

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 1612408885 is about 40154.8114800705. The cubic root of 1612408885 is about 1172.6229620862.

The spelling of 1612408885 in words is "one billion, six hundred twelve million, four hundred eight thousand, eight hundred eighty-five".