19540342870 has 16 divisors (see below), whose sum is σ = 35292665520. Its totient is φ = 7789459744.

The previous prime is 19540342867. The next prime is 19540342891. The reversal of 19540342870 is 7824304591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3331600 + ... + 3337459.

It is an arithmetic number, because the mean of its divisors is an integer number (2205791595).

Almost surely, 2^19540342870 is an apocalyptic number.

19540342870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19540342870 is a deficient number, since it is larger than the sum of its proper divisors (15752322650).

19540342870 is a wasteful number, since it uses less digits than its factorization.

19540342870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669359.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 19540342870 in words is "nineteen billion, five hundred forty million, three hundred forty-two thousand, eight hundred seventy".