1841945490 has 288 divisors, whose sum is σ = 6116842368. Its totient is φ = 376358400.

The previous prime is 1841945437. The next prime is 1841945491. The reversal of 1841945490 is 945491481.

It is a happy number.

1841945490 is a `hidden beast` number, since 18 + 4 + 1 + 94 + 549 + 0 = 666.

1841945490 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (1841945491) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5564625 + ... + 5564955.

It is an arithmetic number, because the mean of its divisors is an integer number (21239036).

Almost surely, 2^1841945490 is an apocalyptic number.

1841945490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1841945490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3058421184).

1841945490 is an abundant number, since it is smaller than the sum of its proper divisors (4274896878).

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

1841945490 is a wasteful number, since it uses less digits than its factorization.

1841945490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1841945490 is about 42917.8924226249. The cubic root of 1841945490 is about 1225.8168623650.

The spelling of 1841945490 in words is "one billion, eight hundred forty-one million, nine hundred forty-five thousand, four hundred ninety".