1834738993 has 2 divisors, whose sum is σ = 1834738994. Its totient is φ = 1834738992.

The previous prime is 1834738981. The next prime is 1834739021. The reversal of 1834738993 is 3998374381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 945685504 + 889053489 = 30752^2 + 29817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1834738993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1834738973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917369496 + 917369497.

It is an arithmetic number, because the mean of its divisors is an integer number (917369497).

Almost surely, 2^1834738993 is an apocalyptic number.

It is an amenable number.

1834738993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1834738993 is an equidigital number, since it uses as much as digits as its factorization.

1834738993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The square root of 1834738993 is about 42833.8533522260. The cubic root of 1834738993 is about 1224.2161289160.

The spelling of 1834738993 in words is "one billion, eight hundred thirty-four million, seven hundred thirty-eight thousand, nine hundred ninety-three".