1994137271 has 6 divisors (see below), whose sum is σ = 2319710760. Its totient is φ = 1709260476.

The previous prime is 1994137261. The next prime is 1994137309. The reversal of 1994137271 is 1727314991.

It is not a de Polignac number, because 1994137271 - 2⁶ = 1994137207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994137231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20348291 + ... + 20348388.

It is an arithmetic number, because the mean of its divisors is an integer number (386618460).

Almost surely, 2^1994137271 is an apocalyptic number.

1994137271 is a deficient number, since it is larger than the sum of its proper divisors (325573489).

1994137271 is an equidigital number, since it uses as much as digits as its factorization.

1994137271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40696693 (or 40696686 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The square root of 1994137271 is about 44655.7641408139. The cubic root of 1994137271 is about 1258.6887490555.

The spelling of 1994137271 in words is "one billion, nine hundred ninety-four million, one hundred thirty-seven thousand, two hundred seventy-one".