19381132 has 24 divisors (see below), whose sum is σ = 34916112. Its totient is φ = 9408000.

The previous prime is 19381129. The next prime is 19381133. The reversal of 19381132 is 23118391.

It is a self number, because there is not a number n which added to its sum of digits gives 19381132.

It is not an unprimeable number, because it can be changed into a prime (19381133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48132 + ... + 48532.

It is an arithmetic number, because the mean of its divisors is an integer number (1454838).

Almost surely, 2^19381132 is an apocalyptic number.

It is an amenable number.

19381132 is a deficient number, since it is larger than the sum of its proper divisors (15534980).

19381132 is a wasteful number, since it uses less digits than its factorization.

19381132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 19381132 is about 4402.4007087043. The cubic root of 19381132 is about 268.6125995324.

The spelling of 19381132 in words is "nineteen million, three hundred eighty-one thousand, one hundred thirty-two".