19442148 has 24 divisors (see below), whose sum is σ = 49489440. Its totient is φ = 5891520.

The previous prime is 19442141. The next prime is 19442167. The reversal of 19442148 is 84124491.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (19442141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73513 + ... + 73776.

It is an arithmetic number, because the mean of its divisors is an integer number (2062060).

Almost surely, 2^19442148 is an apocalyptic number.

It is an amenable number.

19442148 is an abundant number, since it is smaller than the sum of its proper divisors (30047292).

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

19442148 is a wasteful number, since it uses less digits than its factorization.

19442148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147307 (or 147305 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 19442148 is about 4409.3251184280. The cubic root of 19442148 is about 268.8941877799.

The spelling of 19442148 in words is "nineteen million, four hundred forty-two thousand, one hundred forty-eight".