19351948 has 48 divisors (see below), whose sum is σ = 42787584. Its totient is φ = 7439040.

The previous prime is 19351939. The next prime is 19351951. The reversal of 19351948 is 84915391.

It is a self number, because there is not a number n which added to its sum of digits gives 19351948.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25186 + ... + 25942.

It is an arithmetic number, because the mean of its divisors is an integer number (891408).

Almost surely, 2^19351948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19351948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21393792).

19351948 is an abundant number, since it is smaller than the sum of its proper divisors (23435636).

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

19351948 is a wasteful number, since it uses less digits than its factorization.

19351948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 860 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 19351948 is about 4399.0849048410. The cubic root of 19351948 is about 268.4777066868.

It can be divided in two parts, 1935 and 1948, that added together give a palindrome (3883).

The spelling of 19351948 in words is "nineteen million, three hundred fifty-one thousand, nine hundred forty-eight".