1673345731 has 4 divisors (see below), whose sum is σ = 1712260792. Its totient is φ = 1634430672.

The previous prime is 1673345701. The next prime is 1673345743. The reversal of 1673345731 is 1375433761.

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

It is a cyclic number.

It is not a de Polignac number, because 1673345731 - 2⁵ = 1673345699 is a prime.

It is a super-2 number, since 2×1673345731² = 5600171870911848722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673345701) 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, 19457466 + ... + 19457551.

It is an arithmetic number, because the mean of its divisors is an integer number (428065198).

Almost surely, 2^1673345731 is an apocalyptic number.

1673345731 is a deficient number, since it is larger than the sum of its proper divisors (38915061).

1673345731 is an equidigital number, since it uses as much as digits as its factorization.

1673345731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38915060.

The product of its digits is 158760, while the sum is 40.

The square root of 1673345731 is about 40906.5487544476. The cubic root of 1673345731 is about 1187.2127718394.

The spelling of 1673345731 in words is "one billion, six hundred seventy-three million, three hundred forty-five thousand, seven hundred thirty-one".