1612672321 has 8 divisors (see below), whose sum is σ = 1757649600. Its totient is φ = 1470684432.

The previous prime is 1612672307. The next prime is 1612672333. The reversal of 1612672321 is 1232762161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612672321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612672351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746221 + ... + 748378.

It is an arithmetic number, because the mean of its divisors is an integer number (219706200).

Almost surely, 2^1612672321 is an apocalyptic number.

It is an amenable number.

1612672321 is a deficient number, since it is larger than the sum of its proper divisors (144977279).

1612672321 is a wasteful number, since it uses less digits than its factorization.

1612672321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494695.

The product of its digits is 6048, while the sum is 31.

The square root of 1612672321 is about 40158.0916005729. The cubic root of 1612672321 is about 1172.6868198094.

The spelling of 1612672321 in words is "one billion, six hundred twelve million, six hundred seventy-two thousand, three hundred twenty-one".