19487601604 has 27 divisors (see below), whose sum is σ = 34366714893. Its totient is φ = 9669115872.

The previous prime is 19487601593. The next prime is 19487601611. The reversal of 19487601604 is 40610678491.

The square root of 19487601604 is 139598.

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., 124322500 + 19363279104 = 11150^2 + 139152^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 62260552 + ... + 62260864.

Almost surely, 2^19487601604 is an apocalyptic number.

19487601604 is the 139598-th square number.

It is an amenable number.

19487601604 is a deficient number, since it is larger than the sum of its proper divisors (14879113289).

19487601604 is an frugal number, since it uses more digits than its factorization.

19487601604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 19487601604 in words is "nineteen billion, four hundred eighty-seven million, six hundred one thousand, six hundred four".