19246629493 has 24 divisors (see below), whose sum is σ = 24216634680. Its totient is φ = 15161489280.

The previous prime is 19246629439. The next prime is 19246629497. The reversal of 19246629493 is 39492664291.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2429208369 + 16817421124 = 49287^2 + 129682^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19246629493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19246629497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79903 + ... + 211843.

It is an arithmetic number, because the mean of its divisors is an integer number (1009026445).

Almost surely, 2^19246629493 is an apocalyptic number.

19246629493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19246629493 is a deficient number, since it is larger than the sum of its proper divisors (4970005187).

19246629493 is a wasteful number, since it uses less digits than its factorization.

19246629493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132197 (or 132190 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 55.

The spelling of 19246629493 in words is "nineteen billion, two hundred forty-six million, six hundred twenty-nine thousand, four hundred ninety-three".