1838845745 has 32 divisors (see below), whose sum is σ = 2644116480. Its totient is φ = 1211855040.

The previous prime is 1838845733. The next prime is 1838845787. The reversal of 1838845745 is 5475488381.

It is not a de Polignac number, because 1838845745 - 2²⁶ = 1771736881 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14219 + ... + 62288.

It is an arithmetic number, because the mean of its divisors is an integer number (82628640).

Almost surely, 2^1838845745 is an apocalyptic number.

It is an amenable number.

1838845745 is a deficient number, since it is larger than the sum of its proper divisors (805270735).

1838845745 is a wasteful number, since it uses less digits than its factorization.

1838845745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76565.

The product of its digits is 4300800, while the sum is 53.

The square root of 1838845745 is about 42881.7647141533. The cubic root of 1838845745 is about 1225.1288483101.

The spelling of 1838845745 in words is "one billion, eight hundred thirty-eight million, eight hundred forty-five thousand, seven hundred forty-five".