19157145685 has 8 divisors (see below), whose sum is σ = 23279569920. Its totient is φ = 15131719824.

The previous prime is 19157145677. The next prime is 19157145727. The reversal of 19157145685 is 58654175191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19157145685 - 2³ = 19157145677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24249157 + ... + 24249946.

It is an arithmetic number, because the mean of its divisors is an integer number (2909946240).

Almost surely, 2^19157145685 is an apocalyptic number.

It is an amenable number.

19157145685 is a deficient number, since it is larger than the sum of its proper divisors (4122424235).

19157145685 is an equidigital number, since it uses as much as digits as its factorization.

19157145685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48499187.

The product of its digits is 1512000, while the sum is 52.

The spelling of 19157145685 in words is "nineteen billion, one hundred fifty-seven million, one hundred forty-five thousand, six hundred eighty-five".