19195094397 has 16 divisors (see below), whose sum is σ = 26047296000. Its totient is φ = 12570145584.

The previous prime is 19195094389. The next prime is 19195094407. The reversal of 19195094397 is 79349059191.

It is not a de Polignac number, because 19195094397 - 2³ = 19195094389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19195098397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192354 + ... + 274572.

It is an arithmetic number, because the mean of its divisors is an integer number (1627956000).

Almost surely, 2^19195094397 is an apocalyptic number.

It is an amenable number.

19195094397 is a deficient number, since it is larger than the sum of its proper divisors (6852201603).

19195094397 is a wasteful number, since it uses less digits than its factorization.

19195094397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83600.

The product of its (nonzero) digits is 2755620, while the sum is 57.

The spelling of 19195094397 in words is "nineteen billion, one hundred ninety-five million, ninety-four thousand, three hundred ninety-seven".