1612971873 has 10 divisors (see below), whose sum is σ = 2409501314. Its totient is φ = 1075314528.

The previous prime is 1612971859. The next prime is 1612971887. The reversal of 1612971873 is 3781792161.

It is an interprime number because it is at equal distance from previous prime (1612971859) and next prime (1612971887).

It can be written as a sum of positive squares in only one way, i.e., 875686464 + 737285409 = 29592^2 + 27153^2 .

It is not a de Polignac number, because 1612971873 - 2⁶ = 1612971809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612981873) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9956536 + ... + 9956697.

Almost surely, 2^1612971873 is an apocalyptic number.

It is an amenable number.

1612971873 is a deficient number, since it is larger than the sum of its proper divisors (796529441).

1612971873 is an equidigital number, since it uses as much as digits as its factorization.

1612971873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19913245 (or 19913236 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 1612971873 is about 40161.8210866987. The cubic root of 1612971873 is about 1172.7594237166.

The spelling of 1612971873 in words is "one billion, six hundred twelve million, nine hundred seventy-one thousand, eight hundred seventy-three".