19609634748 has 48 divisors (see below), whose sum is σ = 49923627264. Its totient is φ = 5941338240.

The previous prime is 19609634743. The next prime is 19609634767. The reversal of 19609634748 is 84743690691.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19609634743) 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 15 ways as a sum of consecutive naturals, for example, 1564161 + ... + 1576647.

It is an arithmetic number, because the mean of its divisors is an integer number (1040075568).

Almost surely, 2^19609634748 is an apocalyptic number.

It is an amenable number.

19609634748 is an abundant number, since it is smaller than the sum of its proper divisors (30313992516).

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

19609634748 is a wasteful number, since it uses less digits than its factorization.

19609634748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402 (or 24400 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 19609634748 in words is "nineteen billion, six hundred nine million, six hundred thirty-four thousand, seven hundred forty-eight".