1423635673 has 4 divisors (see below), whose sum is σ = 1423797760. Its totient is φ = 1423473588.

The previous prime is 1423635659. The next prime is 1423635677. The reversal of 1423635673 is 3765363241.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423635673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423635677) 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, 67065 + ... + 85702.

It is an arithmetic number, because the mean of its divisors is an integer number (355949440).

Almost surely, 2^1423635673 is an apocalyptic number.

It is an amenable number.

1423635673 is a deficient number, since it is larger than the sum of its proper divisors (162087).

1423635673 is an equidigital number, since it uses as much as digits as its factorization.

1423635673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162086.

The product of its digits is 272160, while the sum is 40.

The square root of 1423635673 is about 37731.0968963268. The cubic root of 1423635673 is about 1124.9493107696.

The spelling of 1423635673 in words is "one billion, four hundred twenty-three million, six hundred thirty-five thousand, six hundred seventy-three".