1612819161 has 16 divisors (see below), whose sum is σ = 2515118400. Its totient is φ = 1018622304.

The previous prime is 1612819151. The next prime is 1612819163. The reversal of 1612819161 is 1619182161.

It is a happy number.

It is not a de Polignac number, because 1612819161 - 2⁵ = 1612819129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1612819163) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1571436 + ... + 1572461.

It is an arithmetic number, because the mean of its divisors is an integer number (157194900).

Almost surely, 2^1612819161 is an apocalyptic number.

It is an amenable number.

1612819161 is a deficient number, since it is larger than the sum of its proper divisors (902299239).

1612819161 is a wasteful number, since it uses less digits than its factorization.

1612819161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143925 (or 3143919 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 1612819161 is about 40159.9198330873. The cubic root of 1612819161 is about 1172.7224112734.

The spelling of 1612819161 in words is "one billion, six hundred twelve million, eight hundred nineteen thousand, one hundred sixty-one".