19648542 has 8 divisors (see below), whose sum is σ = 39297096. Its totient is φ = 6549512.

The previous prime is 19648537. The next prime is 19648547. The reversal of 19648542 is 24584691.

It is an interprime number because it is at equal distance from previous prime (19648537) and next prime (19648547).

It is a sphenic number, since it is the product of 3 distinct primes.

19648542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 19648542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19648547) 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, 1637373 + ... + 1637384.

It is an arithmetic number, because the mean of its divisors is an integer number (4912137).

Almost surely, 2^19648542 is an apocalyptic number.

19648542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19648542 is a wasteful number, since it uses less digits than its factorization.

19648542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274762.

The product of its digits is 69120, while the sum is 39.

The square root of 19648542 is about 4432.6675941243. The cubic root of 19648542 is about 269.8423496684.

The spelling of 19648542 in words is "nineteen million, six hundred forty-eight thousand, five hundred forty-two".