191592149851 has 4 divisors (see below), whose sum is σ = 192595250304. Its totient is φ = 190589049400.

The previous prime is 191592149843. The next prime is 191592149867. The reversal of 191592149851 is 158941295191.

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 191592149851 - 2³ = 191592149843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191592149792 and 191592149801.

It is not an unprimeable number, because it can be changed into a prime (191592149351) 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, 501549940 + ... + 501550321.

It is an arithmetic number, because the mean of its divisors is an integer number (48148812576).

Almost surely, 2^191592149851 is an apocalyptic number.

191592149851 is a deficient number, since it is larger than the sum of its proper divisors (1003100453).

191592149851 is a wasteful number, since it uses less digits than its factorization.

191592149851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003100452.

The product of its digits is 1166400, while the sum is 55.

The spelling of 191592149851 in words is "one hundred ninety-one billion, five hundred ninety-two million, one hundred forty-nine thousand, eight hundred fifty-one".