19880557293 has 8 divisors (see below), whose sum is σ = 26509637728. Its totient is φ = 13252590864.

The previous prime is 19880557289. The next prime is 19880557297. The reversal of 19880557293 is 39275508891.

It is an interprime number because it is at equal distance from previous prime (19880557289) and next prime (19880557297).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19880557293 - 2² = 19880557289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19880557297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235930 + ... + 308907.

It is an arithmetic number, because the mean of its divisors is an integer number (3313704716).

Almost surely, 2^19880557293 is an apocalyptic number.

It is an amenable number.

19880557293 is a deficient number, since it is larger than the sum of its proper divisors (6629080435).

19880557293 is a wasteful number, since it uses less digits than its factorization.

19880557293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557003.

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 19880557293 in words is "nineteen billion, eight hundred eighty million, five hundred fifty-seven thousand, two hundred ninety-three".