192470857 has 4 divisors (see below), whose sum is σ = 192499216. Its totient is φ = 192442500.

The previous prime is 192470849. The next prime is 192470867. The reversal of 192470857 is 758074291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 758074291 = 13 ⋅58313407.

It is a cyclic number.

It is not a de Polignac number, because 192470857 - 2³ = 192470849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192470807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2698 + ... + 19804.

It is an arithmetic number, because the mean of its divisors is an integer number (48124804).

Almost surely, 2^192470857 is an apocalyptic number.

It is an amenable number.

192470857 is a deficient number, since it is larger than the sum of its proper divisors (28359).

192470857 is a wasteful number, since it uses less digits than its factorization.

192470857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28358.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 192470857 is about 13873.3866449400. The cubic root of 192470857 is about 577.3710357128.

The spelling of 192470857 in words is "one hundred ninety-two million, four hundred seventy thousand, eight hundred fifty-seven".