19420031807 has 32 divisors (see below), whose sum is σ = 22500370944. Its totient is φ = 16587648000.

The previous prime is 19420031713. The next prime is 19420031831. The reversal of 19420031807 is 70813002491.

It is not a de Polignac number, because 19420031807 - 2⁸ = 19420031551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19420031837) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6795923 + ... + 6798779.

It is an arithmetic number, because the mean of its divisors is an integer number (703136592).

Almost surely, 2^19420031807 is an apocalyptic number.

19420031807 is a deficient number, since it is larger than the sum of its proper divisors (3080339137).

19420031807 is a wasteful number, since it uses less digits than its factorization.

19420031807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 19420031807 in words is "nineteen billion, four hundred twenty million, thirty-one thousand, eight hundred seven".