1673338553 has 4 divisors (see below), whose sum is σ = 1727317248. Its totient is φ = 1619359860.

The previous prime is 1673338547. The next prime is 1673338559. The reversal of 1673338553 is 3558333761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3558333761 = 757 ⋅4700573.

It is an interprime number because it is at equal distance from previous prime (1673338547) and next prime (1673338559).

It is a cyclic number.

It is not a de Polignac number, because 1673338553 - 2²⁰ = 1672289977 is a prime.

It is a super-2 number, since 2×1673338553² = 5600123825912267618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673338559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26989301 + ... + 26989362.

It is an arithmetic number, because the mean of its divisors is an integer number (431829312).

Almost surely, 2^1673338553 is an apocalyptic number.

It is an amenable number.

1673338553 is a deficient number, since it is larger than the sum of its proper divisors (53978695).

1673338553 is an equidigital number, since it uses as much as digits as its factorization.

1673338553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53978694.

The product of its digits is 680400, while the sum is 44.

The square root of 1673338553 is about 40906.4610177903. The cubic root of 1673338553 is about 1187.2110742772.

The spelling of 1673338553 in words is "one billion, six hundred seventy-three million, three hundred thirty-eight thousand, five hundred fifty-three".