19408920343 has 8 divisors (see below), whose sum is σ = 19530976608. Its totient is φ = 19286977824.

The previous prime is 19408920329. The next prime is 19408920359. The reversal of 19408920343 is 34302980491.

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

It is a cyclic number.

It is not a de Polignac number, because 19408920343 - 2¹⁷ = 19408789271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19408920343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19408923343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327846 + ... + 382492.

It is an arithmetic number, because the mean of its divisors is an integer number (2441372076).

Almost surely, 2^19408920343 is an apocalyptic number.

19408920343 is a deficient number, since it is larger than the sum of its proper divisors (122056265).

19408920343 is a wasteful number, since it uses less digits than its factorization.

19408920343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56873.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 19408920343 in words is "nineteen billion, four hundred eight million, nine hundred twenty thousand, three hundred forty-three".