1836394541 has 2 divisors, whose sum is σ = 1836394542. Its totient is φ = 1836394540.

The previous prime is 1836394537. The next prime is 1836394601. The reversal of 1836394541 is 1454936381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210344100 + 626050441 = 34790^2 + 25021^2 .

It is a cyclic number.

It is not a de Polignac number, because 1836394541 - 2² = 1836394537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1836394492 and 1836394501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1836394531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918197270 + 918197271.

It is an arithmetic number, because the mean of its divisors is an integer number (918197271).

Almost surely, 2^1836394541 is an apocalyptic number.

It is an amenable number.

1836394541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836394541 is an equidigital number, since it uses as much as digits as its factorization.

1836394541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 1836394541 is about 42853.1742231541. The cubic root of 1836394541 is about 1224.5842356377.

The spelling of 1836394541 in words is "one billion, eight hundred thirty-six million, three hundred ninety-four thousand, five hundred forty-one".