1840826121 has 4 divisors (see below), whose sum is σ = 2454434832. Its totient is φ = 1227217412.

The previous prime is 1840826089. The next prime is 1840826123. The reversal of 1840826121 is 1216280481.

1840826121 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1840826121 - 2⁵ = 1840826089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1840826123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306804351 + ... + 306804356.

It is an arithmetic number, because the mean of its divisors is an integer number (613608708).

Almost surely, 2^1840826121 is an apocalyptic number.

It is an amenable number.

1840826121 is a deficient number, since it is larger than the sum of its proper divisors (613608711).

1840826121 is an equidigital number, since it uses as much as digits as its factorization.

1840826121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613608710.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1840826121 is about 42904.8496209927. The cubic root of 1840826121 is about 1225.5684982573.

The spelling of 1840826121 in words is "one billion, eight hundred forty million, eight hundred twenty-six thousand, one hundred twenty-one".