1838109043 has 2 divisors, whose sum is σ = 1838109044. Its totient is φ = 1838109042.

The previous prime is 1838109029. The next prime is 1838109107. The reversal of 1838109043 is 3409018381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1838109043 - 2¹³ = 1838100851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1838108993 and 1838109011.

It is not a weakly prime, because it can be changed into another prime (1838101043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919054521 + 919054522.

It is an arithmetic number, because the mean of its divisors is an integer number (919054522).

Almost surely, 2^1838109043 is an apocalyptic number.

1838109043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838109043 is an equidigital number, since it uses as much as digits as its factorization.

1838109043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1838109043 is about 42873.1739319589. The cubic root of 1838109043 is about 1224.9652175047.

The spelling of 1838109043 in words is "one billion, eight hundred thirty-eight million, one hundred nine thousand, forty-three".