1841213772 has 72 divisors (see below), whose sum is σ = 4921512960. Its totient is φ = 578780640.

The previous prime is 1841213749. The next prime is 1841213797. The reversal of 1841213772 is 2773121481.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 146497 + ... + 158567.

Almost surely, 2^1841213772 is an apocalyptic number.

1841213772 is a gapful number since it is divisible by the number (12) 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 1841213772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460756480).

1841213772 is an abundant number, since it is smaller than the sum of its proper divisors (3080299188).

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

1841213772 is a wasteful number, since it uses less digits than its factorization.

1841213772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12323 (or 12318 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1841213772 is about 42909.3669494203. The cubic root of 1841213772 is about 1225.6545211400.

The spelling of 1841213772 in words is "one billion, eight hundred forty-one million, two hundred thirteen thousand, seven hundred seventy-two".