1838400441 has 16 divisors (see below), whose sum is σ = 2506560768. Its totient is φ = 1197987200.

The previous prime is 1838400439. The next prime is 1838400467. The reversal of 1838400441 is 1440048381.

It is a cyclic number.

It is not a de Polignac number, because 1838400441 - 2¹ = 1838400439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1838400541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107821 + ... + 123701.

It is an arithmetic number, because the mean of its divisors is an integer number (156660048).

Almost surely, 2^1838400441 is an apocalyptic number.

It is an amenable number.

1838400441 is a deficient number, since it is larger than the sum of its proper divisors (668160327).

1838400441 is a wasteful number, since it uses less digits than its factorization.

1838400441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16752.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 1838400441 is about 42876.5721694260. The cubic root of 1838400441 is about 1225.0299459013.

The spelling of 1838400441 in words is "one billion, eight hundred thirty-eight million, four hundred thousand, four hundred forty-one".