19854842037 has 16 divisors (see below), whose sum is σ = 26530479360. Its totient is φ = 13207914432.

The previous prime is 19854841961. The next prime is 19854842047. The reversal of 19854842037 is 73024845891.

It is a happy number.

It is not a de Polignac number, because 19854842037 - 2¹⁸ = 19854579893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19854842047) 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 15 ways as a sum of consecutive naturals, for example, 3649083 + ... + 3654519.

It is an arithmetic number, because the mean of its divisors is an integer number (1658154960).

Almost surely, 2^19854842037 is an apocalyptic number.

It is an amenable number.

19854842037 is a deficient number, since it is larger than the sum of its proper divisors (6675637323).

19854842037 is a wasteful number, since it uses less digits than its factorization.

19854842037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 19854842037 in words is "nineteen billion, eight hundred fifty-four million, eight hundred forty-two thousand, thirty-seven".