1836140434 has 8 divisors (see below), whose sum is σ = 2771753868. Its totient is φ = 912222480.

The previous prime is 1836140419. The next prime is 1836140441. The reversal of 1836140434 is 4340416381.

It can be written as a sum of positive squares in 2 ways, for example, as 1796488225 + 39652209 = 42385^2 + 6297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1836140434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2923477 + ... + 2924104.

Almost surely, 2^1836140434 is an apocalyptic number.

1836140434 is a deficient number, since it is larger than the sum of its proper divisors (935613434).

1836140434 is a wasteful number, since it uses less digits than its factorization.

1836140434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847740.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 1836140434 is about 42850.2092643665. The cubic root of 1836140434 is about 1224.5277499945.

The spelling of 1836140434 in words is "one billion, eight hundred thirty-six million, one hundred forty thousand, four hundred thirty-four".