19919132 has 12 divisors (see below), whose sum is σ = 35004816. Its totient is φ = 9917760.

The previous prime is 19919131. The next prime is 19919147. The reversal of 19919132 is 23191991.

It is a junction number, because it is equal to n+sod(n) for n = 19919092 and 19919101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19919131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9368 + ... + 11295.

It is an arithmetic number, because the mean of its divisors is an integer number (2917068).

Almost surely, 2^19919132 is an apocalyptic number.

It is an amenable number.

19919132 is a deficient number, since it is larger than the sum of its proper divisors (15085684).

19919132 is a wasteful number, since it uses less digits than its factorization.

19919132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20908 (or 20906 counting only the distinct ones).

The product of its digits is 4374, while the sum is 35.

The square root of 19919132 is about 4463.0854797998. The cubic root of 19919132 is about 271.0754182509.

The spelling of 19919132 in words is "nineteen million, nine hundred nineteen thousand, one hundred thirty-two".