19825705942 has 16 divisors (see below), whose sum is σ = 34231438080. Its totient is φ = 8435602728.

The previous prime is 19825705927. The next prime is 19825705943. The reversal of 19825705942 is 24950752891.

It is a self number, because there is not a number n which added to its sum of digits gives 19825705942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19825705943) 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, 5092018 + ... + 5095909.

It is an arithmetic number, because the mean of its divisors is an integer number (2139464880).

Almost surely, 2^19825705942 is an apocalyptic number.

19825705942 is a deficient number, since it is larger than the sum of its proper divisors (14405732138).

19825705942 is a wasteful number, since it uses less digits than its factorization.

19825705942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10188075.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 19825705942 in words is "nineteen billion, eight hundred twenty-five million, seven hundred five thousand, nine hundred forty-two".