18619196287 has 4 divisors (see below), whose sum is σ = 18635345920. Its totient is φ = 18603046656.

The previous prime is 18619196251. The next prime is 18619196327. The reversal of 18619196287 is 78269191681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78269191681 = 188843 ⋅414467.

It is a cyclic number.

It is not a de Polignac number, because 18619196287 - 2⁷ = 18619196159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18619196237) 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, 8073087 + ... + 8075392.

It is an arithmetic number, because the mean of its divisors is an integer number (4658836480).

Almost surely, 2^18619196287 is an apocalyptic number.

18619196287 is a deficient number, since it is larger than the sum of its proper divisors (16149633).

18619196287 is a wasteful number, since it uses less digits than its factorization.

18619196287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16149632.

The product of its digits is 2612736, while the sum is 58.

The spelling of 18619196287 in words is "eighteen billion, six hundred nineteen million, one hundred ninety-six thousand, two hundred eighty-seven".