1845480140 has 72 divisors (see below), whose sum is σ = 4593434832. Its totient is φ = 620780160.

The previous prime is 1845480139. The next prime is 1845480229. The reversal of 1845480140 is 410845481.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1845480140.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34175 + ... + 69705.

It is an arithmetic number, because the mean of its divisors is an integer number (63797706).

Almost surely, 2^1845480140 is an apocalyptic number.

1845480140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1845480140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2296717416).

1845480140 is an abundant number, since it is smaller than the sum of its proper divisors (2747954692).

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

1845480140 is a wasteful number, since it uses less digits than its factorization.

1845480140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35607 (or 35598 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 1845480140 is about 42959.0518982903. The cubic root of 1845480140 is about 1226.6004658994.

The spelling of 1845480140 in words is "one billion, eight hundred forty-five million, four hundred eighty thousand, one hundred forty".