194432409263 has 4 divisors (see below), whose sum is σ = 194628608448. Its totient is φ = 194236210080.

The previous prime is 194432409247. The next prime is 194432409277. The reversal of 194432409263 is 362904234491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362904234491 = 401 ⋅904998091.

It is a cyclic number.

It is not a de Polignac number, because 194432409263 - 2⁴ = 194432409247 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 (194432409863) 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, 98098106 + ... + 98100087.

It is an arithmetic number, because the mean of its divisors is an integer number (48657152112).

Almost surely, 2^194432409263 is an apocalyptic number.

194432409263 is a deficient number, since it is larger than the sum of its proper divisors (196199185).

194432409263 is an equidigital number, since it uses as much as digits as its factorization.

194432409263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196199184.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 194432409263 in words is "one hundred ninety-four billion, four hundred thirty-two million, four hundred nine thousand, two hundred sixty-three".