19148742 has 36 divisors (see below), whose sum is σ = 43392804. Its totient is φ = 6102360.

The previous prime is 19148737. The next prime is 19148743. The reversal of 19148742 is 24784191.

It is a junction number, because it is equal to n+sod(n) for n = 19148697 and 19148706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19148743) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8517 + ... + 10527.

Almost surely, 2^19148742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19148742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21696402).

19148742 is an abundant number, since it is smaller than the sum of its proper divisors (24244062).

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

19148742 is a wasteful number, since it uses less digits than its factorization.

19148742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2039 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 19148742 is about 4375.9275588154. The cubic root of 19148742 is about 267.5346774271.

The spelling of 19148742 in words is "nineteen million, one hundred forty-eight thousand, seven hundred forty-two".