191413969 has 4 divisors (see below), whose sum is σ = 192029760. Its totient is φ = 190798180.

The previous prime is 191413951. The next prime is 191413973. The reversal of 191413969 is 969314191.

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.

It is a cyclic number.

It is not a de Polignac number, because 191413969 - 2¹¹ = 191411921 is a prime.

It is a super-2 number, since 2×191413969² = 73278615056665922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191413909) 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, 307429 + ... + 308050.

It is an arithmetic number, because the mean of its divisors is an integer number (48007440).

Almost surely, 2^191413969 is an apocalyptic number.

It is an amenable number.

191413969 is a deficient number, since it is larger than the sum of its proper divisors (615791).

191413969 is an equidigital number, since it uses as much as digits as its factorization.

191413969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615790.

The product of its digits is 52488, while the sum is 43.

The square root of 191413969 is about 13835.2437275243. The cubic root of 191413969 is about 576.3122834416.

The spelling of 191413969 in words is "one hundred ninety-one million, four hundred thirteen thousand, nine hundred sixty-nine".