19090825253947 has 4 divisors (see below), whose sum is σ = 19090848821616. Its totient is φ = 19090801686280.

The previous prime is 19090825253939. The next prime is 19090825253999. The reversal of 19090825253947 is 74935252809091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19090825253947 - 2³ = 19090825253939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19090825253347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10523863 + ... + 12203824.

It is an arithmetic number, because the mean of its divisors is an integer number (4772712205404).

Almost surely, 2^{19090825253947} is an apocalyptic number.

19090825253947 is a deficient number, since it is larger than the sum of its proper divisors (23567669).

19090825253947 is an equidigital number, since it uses as much as digits as its factorization.

19090825253947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23567668.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 19090825253947 in words is "nineteen trillion, ninety billion, eight hundred twenty-five million, two hundred fifty-three thousand, nine hundred forty-seven".