2174724139 has 4 divisors (see below), whose sum is σ = 2485399024. Its totient is φ = 1864049256.

The previous prime is 2174724137. The next prime is 2174724179. The reversal of 2174724139 is 9314274712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2174724139 - 2¹ = 2174724137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2174724131) 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, 155337432 + ... + 155337445.

It is an arithmetic number, because the mean of its divisors is an integer number (621349756).

Almost surely, 2^2174724139 is an apocalyptic number.

2174724139 is a deficient number, since it is larger than the sum of its proper divisors (310674885).

2174724139 is an equidigital number, since it uses as much as digits as its factorization.

2174724139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310674884.

The product of its digits is 84672, while the sum is 40.

The square root of 2174724139 is about 46633.9376313002. The cubic root of 2174724139 is about 1295.5914054102.

The spelling of 2174724139 in words is "two billion, one hundred seventy-four million, seven hundred twenty-four thousand, one hundred thirty-nine".