1612732073 has 4 divisors (see below), whose sum is σ = 1612888260. Its totient is φ = 1612575888.

The previous prime is 1612732049. The next prime is 1612732117. The reversal of 1612732073 is 3702372161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3702372161 = 6221 ⋅595141.

It can be written as a sum of positive squares in 2 ways, for example, as 488940544 + 1123791529 = 22112^2 + 33523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612732073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612732873) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 61418 + ... + 83651.

It is an arithmetic number, because the mean of its divisors is an integer number (403222065).

Almost surely, 2^1612732073 is an apocalyptic number.

It is an amenable number.

1612732073 is a deficient number, since it is larger than the sum of its proper divisors (156187).

1612732073 is a wasteful number, since it uses less digits than its factorization.

1612732073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156186.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 1612732073 is about 40158.8355533374. The cubic root of 1612732073 is about 1172.7013029165.

The spelling of 1612732073 in words is "one billion, six hundred twelve million, seven hundred thirty-two thousand, seventy-three".