1724138906 has 16 divisors (see below), whose sum is σ = 2956233024. Its totient is φ = 738775104.

The previous prime is 1724138891. The next prime is 1724138917. The reversal of 1724138906 is 6098314271.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101201 + ... + 117003.

It is an arithmetic number, because the mean of its divisors is an integer number (184764564).

Almost surely, 2^1724138906 is an apocalyptic number.

1724138906 is a deficient number, since it is larger than the sum of its proper divisors (1232094118).

1724138906 is a wasteful number, since it uses less digits than its factorization.

1724138906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23605.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1724138906 is about 41522.7516670078. The cubic root of 1724138906 is about 1199.1055617232.

The spelling of 1724138906 in words is "one billion, seven hundred twenty-four million, one hundred thirty-eight thousand, nine hundred six".