2129474191 has 24 divisors (see below), whose sum is σ = 2433402240. Its totient is φ = 1857492000.

The previous prime is 2129474183. The next prime is 2129474201. The reversal of 2129474191 is 1914749212.

It is not a de Polignac number, because 2129474191 - 2³ = 2129474183 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 (2129474101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2025616 + ... + 2026666.

It is an arithmetic number, because the mean of its divisors is an integer number (101391760).

Almost surely, 2^2129474191 is an apocalyptic number.

2129474191 is a deficient number, since it is larger than the sum of its proper divisors (303928049).

2129474191 is a wasteful number, since it uses less digits than its factorization.

2129474191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727 (or 1714 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 2129474191 is about 46146.2261837303. The cubic root of 2129474191 is about 1286.5424690704.

The spelling of 2129474191 in words is "two billion, one hundred twenty-nine million, four hundred seventy-four thousand, one hundred ninety-one".