2194581532 has 24 divisors (see below), whose sum is σ = 4511938032. Its totient is φ = 920803200.

The previous prime is 2194581511. The next prime is 2194581533. The reversal of 2194581532 is 2351854912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194581533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1917769 + ... + 1918912.

It is an arithmetic number, because the mean of its divisors is an integer number (187997418).

Almost surely, 2^2194581532 is an apocalyptic number.

2194581532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2194581532 is an abundant number, since it is smaller than the sum of its proper divisors (2317356500).

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

2194581532 is a wasteful number, since it uses less digits than its factorization.

2194581532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836709 (or 3836707 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 2194581532 is about 46846.3609259033. The cubic root of 2194581532 is about 1299.5228094747.

The spelling of 2194581532 in words is "two billion, one hundred ninety-four million, five hundred eighty-one thousand, five hundred thirty-two".