1671993494 has 8 divisors (see below), whose sum is σ = 2588893248. Its totient is φ = 809029080.

The previous prime is 1671993493. The next prime is 1671993511. The reversal of 1671993494 is 4943991761.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671993493) 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, 13483757 + ... + 13483880.

It is an arithmetic number, because the mean of its divisors is an integer number (323611656).

Almost surely, 2^1671993494 is an apocalyptic number.

1671993494 is a deficient number, since it is larger than the sum of its proper divisors (916899754).

1671993494 is a wasteful number, since it uses less digits than its factorization.

1671993494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26967670.

The product of its digits is 1469664, while the sum is 53.

The square root of 1671993494 is about 40890.0170457289. The cubic root of 1671993494 is about 1186.8928886172.

The spelling of 1671993494 in words is "one billion, six hundred seventy-one million, nine hundred ninety-three thousand, four hundred ninety-four".