1493643873 has 8 divisors (see below), whose sum is σ = 1993936608. Its totient is φ = 994556864.

The previous prime is 1493643857. The next prime is 1493643881. The reversal of 1493643873 is 3783463941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1493643873 - 2⁴ = 1493643857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1493643773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298536 + ... + 303497.

It is an arithmetic number, because the mean of its divisors is an integer number (249242076).

Almost surely, 2^1493643873 is an apocalyptic number.

It is an amenable number.

1493643873 is a deficient number, since it is larger than the sum of its proper divisors (500292735).

1493643873 is an equidigital number, since it uses as much as digits as its factorization.

1493643873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602863.

The product of its digits is 1306368, while the sum is 48.

The square root of 1493643873 is about 38647.6891029723. The cubic root of 1493643873 is about 1143.0950757876.

The spelling of 1493643873 in words is "one billion, four hundred ninety-three million, six hundred forty-three thousand, eight hundred seventy-three".