1672306513 has 4 divisors (see below), whose sum is σ = 1672686180. Its totient is φ = 1671926848.

The previous prime is 1672306511. The next prime is 1672306579. The reversal of 1672306513 is 3156032761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1114024129 + 558282384 = 33377^2 + 23628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672306513 - 2¹ = 1672306511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672306511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183148 + ... + 192061.

It is an arithmetic number, because the mean of its divisors is an integer number (418171545).

Almost surely, 2^1672306513 is an apocalyptic number.

It is an amenable number.

1672306513 is a deficient number, since it is larger than the sum of its proper divisors (379667).

1672306513 is an equidigital number, since it uses as much as digits as its factorization.

1672306513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379666.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 1672306513 is about 40893.8444389862. The cubic root of 1672306513 is about 1186.9669512745.

The spelling of 1672306513 in words is "one billion, six hundred seventy-two million, three hundred six thousand, five hundred thirteen".