1673940479 has 4 divisors (see below), whose sum is σ = 1772407584. Its totient is φ = 1575473376.

The previous prime is 1673940469. The next prime is 1673940481. The reversal of 1673940479 is 9740493761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9740493761 = 65437 ⋅148853.

It is a cyclic number.

It is not a de Polignac number, because 1673940479 - 2²⁰ = 1672891903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673940409) 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, 49233527 + ... + 49233560.

It is an arithmetic number, because the mean of its divisors is an integer number (443101896).

Almost surely, 2^1673940479 is an apocalyptic number.

1673940479 is a deficient number, since it is larger than the sum of its proper divisors (98467105).

1673940479 is an equidigital number, since it uses as much as digits as its factorization.

1673940479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98467104.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 1673940479 is about 40913.8177025806. The cubic root of 1673940479 is about 1187.3534099974.

The spelling of 1673940479 in words is "one billion, six hundred seventy-three million, nine hundred forty thousand, four hundred seventy-nine".