1613760321 has 8 divisors (see below), whose sum is σ = 2159680320. Its totient is φ = 1071840272.

The previous prime is 1613760301. The next prime is 1613760347. The reversal of 1613760321 is 1230673161.

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

It is a cyclic number.

It is not a de Polignac number, because 1613760321 - 2⁹ = 1613759809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1613760301) 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, 999045 + ... + 1000658.

It is an arithmetic number, because the mean of its divisors is an integer number (269960040).

Almost surely, 2^1613760321 is an apocalyptic number.

It is an amenable number.

1613760321 is a deficient number, since it is larger than the sum of its proper divisors (545919999).

1613760321 is a wasteful number, since it uses less digits than its factorization.

1613760321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999975.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1613760321 is about 40171.6357770007. The cubic root of 1613760321 is about 1172.9504808196.

The spelling of 1613760321 in words is "one billion, six hundred thirteen million, seven hundred sixty thousand, three hundred twenty-one".