19430263852 has 24 divisors (see below), whose sum is σ = 34178180400. Its totient is φ = 9665134080.

The previous prime is 19430263847. The next prime is 19430263859. The reversal of 19430263852 is 25836203491.

It is a junction number, because it is equal to n+sod(n) for n = 19430263799 and 19430263808.

It is not an unprimeable number, because it can be changed into a prime (19430263859) 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, 1337524 + ... + 1351972.

It is an arithmetic number, because the mean of its divisors is an integer number (1424090850).

Almost surely, 2^19430263852 is an apocalyptic number.

It is an amenable number.

19430263852 is a deficient number, since it is larger than the sum of its proper divisors (14747916548).

19430263852 is a wasteful number, since it uses less digits than its factorization.

19430263852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161 (or 16159 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 19430263852 in words is "nineteen billion, four hundred thirty million, two hundred sixty-three thousand, eight hundred fifty-two".