1845289446 has 384 divisors, whose sum is σ = 5559902208. Its totient is φ = 395366400.

The previous prime is 1845289427. The next prime is 1845289447. The reversal of 1845289446 is 6449825481.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845289447) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 34816756 + ... + 34816808.

It is an arithmetic number, because the mean of its divisors is an integer number (14478912).

Almost surely, 2^1845289446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1845289446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2779951104).

1845289446 is an abundant number, since it is smaller than the sum of its proper divisors (3714612762).

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

1845289446 is a wasteful number, since it uses less digits than its factorization.

1845289446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 137 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The square root of 1845289446 is about 42956.8323552843. The cubic root of 1845289446 is about 1226.5582161164.

The spelling of 1845289446 in words is "one billion, eight hundred forty-five million, two hundred eighty-nine thousand, four hundred forty-six".