19235470864 has 15 divisors (see below), whose sum is σ = 37269799693. Its totient is φ = 9617458048.

The previous prime is 19235470861. The next prime is 19235470901. The reversal of 19235470864 is 46807453291.

It is a happy number.

The square root of 19235470864 is 138692.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1335171600 + 17900299264 = 36540^2 + 133792^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19235470861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 537432 + ... + 572104.

It is a 1-persistent number, because it is pandigital, but 2⋅19235470864 = 38470941728 is not.

Almost surely, 2^19235470864 is an apocalyptic number.

19235470864 is the 138692-nd square number.

It is an amenable number.

19235470864 is a deficient number, since it is larger than the sum of its proper divisors (18034328829).

19235470864 is an frugal number, since it uses more digits than its factorization.

19235470864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69354 (or 34675 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

Multiplying 19235470864 by its sum of digits (49), we get a square (942538072336 = 970844²).

The spelling of 19235470864 in words is "nineteen billion, two hundred thirty-five million, four hundred seventy thousand, eight hundred sixty-four".