19386748623 has 48 divisors (see below), whose sum is σ = 29242039680. Its totient is φ = 11407872960.

The previous prime is 19386748621. The next prime is 19386748649. The reversal of 19386748623 is 32684768391.

It is not a de Polignac number, because 19386748623 - 2¹ = 19386748621 is a prime.

It is a super-2 number, since 2×19386748623² (a number of 21 digits) contains 22 as substring.

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 (19386748621) 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 47 ways as a sum of consecutive naturals, for example, 7882768 + ... + 7885226.

It is an arithmetic number, because the mean of its divisors is an integer number (609209160).

Almost surely, 2^19386748623 is an apocalyptic number.

19386748623 is a deficient number, since it is larger than the sum of its proper divisors (9855291057).

19386748623 is a wasteful number, since it uses less digits than its factorization.

19386748623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108 (or 3097 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 19386748623 in words is "nineteen billion, three hundred eighty-six million, seven hundred forty-eight thousand, six hundred twenty-three".