1841238945 has 252 divisors, whose sum is σ = 4241202876. Its totient is φ = 764225280.

The previous prime is 1841238937. The next prime is 1841238967. The reversal of 1841238945 is 5498321481.

It can be written as a sum of positive squares in 6 ways, for example, as 880486929 + 960752016 = 29673^2 + 30996^2 .

It is not a de Polignac number, because 1841238945 - 2³ = 1841238937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1841238945.

It is an unprimeable number.

It is a polite number, since it can be written in 251 ways as a sum of consecutive naturals, for example, 30184215 + ... + 30184275.

Almost surely, 2^1841238945 is an apocalyptic number.

1841238945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1841238945 is an abundant number, since it is smaller than the sum of its proper divisors (2399963931).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1841238945 is an equidigital number, since it uses as much as digits as its factorization.

1841238945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 89 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 1841238945 is about 42909.6602759798. The cubic root of 1841238945 is about 1225.6601068142.

The spelling of 1841238945 in words is "one billion, eight hundred forty-one million, two hundred thirty-eight thousand, nine hundred forty-five".