194041977 has 4 divisors (see below), whose sum is σ = 258722640. Its totient is φ = 129361316.

The previous prime is 194041963. The next prime is 194041979. The reversal of 194041977 is 779140491.

194041977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 779140491 = 3 ⋅259713497.

It is a cyclic number.

It is not a de Polignac number, because 194041977 - 2¹⁶ = 193976441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194041979) 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, 32340327 + ... + 32340332.

It is an arithmetic number, because the mean of its divisors is an integer number (64680660).

Almost surely, 2^194041977 is an apocalyptic number.

It is an amenable number.

194041977 is a deficient number, since it is larger than the sum of its proper divisors (64680663).

194041977 is an equidigital number, since it uses as much as digits as its factorization.

194041977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64680662.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 194041977 is about 13929.8950821605. The cubic root of 194041977 is about 578.9377873205.

The spelling of 194041977 in words is "one hundred ninety-four million, forty-one thousand, nine hundred seventy-seven".