1834738409 has 12 divisors (see below), whose sum is σ = 2145024000. Its totient is φ = 1564721928.

The previous prime is 1834738349. The next prime is 1834738463. The reversal of 1834738409 is 9048374381.

It is a de Polignac number, because none of the positive numbers 2^k-1834738409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1834738909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84329 + ... + 103830.

It is an arithmetic number, because the mean of its divisors is an integer number (178752000).

Almost surely, 2^1834738409 is an apocalyptic number.

It is an amenable number.

1834738409 is a deficient number, since it is larger than the sum of its proper divisors (310285591).

1834738409 is a wasteful number, since it uses less digits than its factorization.

1834738409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188372 (or 188365 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 1834738409 is about 42833.8465351876. The cubic root of 1834738409 is about 1224.2159990261.

The spelling of 1834738409 in words is "one billion, eight hundred thirty-four million, seven hundred thirty-eight thousand, four hundred nine".