191957045 has 8 divisors (see below), whose sum is σ = 263255424. Its totient is φ = 131627664.

The previous prime is 191957041. The next prime is 191957099. The reversal of 191957045 is 540759191.

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

It is not a de Polignac number, because 191957045 - 2² = 191957041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191956993 and 191957011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191957041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2742209 + ... + 2742278.

It is an arithmetic number, because the mean of its divisors is an integer number (32906928).

Almost surely, 2^191957045 is an apocalyptic number.

It is an amenable number.

191957045 is a deficient number, since it is larger than the sum of its proper divisors (71298379).

191957045 is an equidigital number, since it uses as much as digits as its factorization.

191957045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484499.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 191957045 is about 13854.8563687972. The cubic root of 191957045 is about 576.8568028098.

The spelling of 191957045 in words is "one hundred ninety-one million, nine hundred fifty-seven thousand, forty-five".