19426857038 has 16 divisors (see below), whose sum is σ = 30211127280. Its totient is φ = 9357948096.

The previous prime is 19426857031. The next prime is 19426857053. The reversal of 19426857038 is 83075862491.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19426857031) 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, 339956 + ... + 392967.

It is an arithmetic number, because the mean of its divisors is an integer number (1888195455).

It is a 1-persistent number, because it is pandigital, but 2⋅19426857038 = 38853714076 is not.

Almost surely, 2^19426857038 is an apocalyptic number.

19426857038 is a deficient number, since it is larger than the sum of its proper divisors (10784270242).

19426857038 is a wasteful number, since it uses less digits than its factorization.

19426857038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733411.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 19426857038 in words is "nineteen billion, four hundred twenty-six million, eight hundred fifty-seven thousand, thirty-eight".