1243411673 has 4 divisors (see below), whose sum is σ = 1421041920. Its totient is φ = 1065781428.

The previous prime is 1243411667. The next prime is 1243411681. The reversal of 1243411673 is 3761143421.

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 not a de Polignac number, because 1243411673 - 2⁴ = 1243411657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243413673) 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, 88815113 + ... + 88815126.

It is an arithmetic number, because the mean of its divisors is an integer number (355260480).

Almost surely, 2^1243411673 is an apocalyptic number.

It is an amenable number.

1243411673 is a deficient number, since it is larger than the sum of its proper divisors (177630247).

1243411673 is an equidigital number, since it uses as much as digits as its factorization.

1243411673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177630246.

The product of its digits is 12096, while the sum is 32.

The square root of 1243411673 is about 35262.0429498916. The cubic root of 1243411673 is about 1075.3214608847.

The spelling of 1243411673 in words is "one billion, two hundred forty-three million, four hundred eleven thousand, six hundred seventy-three".