191607401 has 2 divisors, whose sum is σ = 191607402. Its totient is φ = 191607400.

The previous prime is 191607389. The next prime is 191607413. The reversal of 191607401 is 104706191.

It is a balanced prime because it is at equal distance from previous prime (191607389) and next prime (191607413).

It can be written as a sum of positive squares in only one way, i.e., 167832025 + 23775376 = 12955^2 + 4876^2 .

It is an emirp because it is prime and its reverse (104706191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191607401 - 2¹⁰ = 191606377 is a prime.

It is a super-2 number, since 2×191607401² = 73426792235949602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (191607461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95803700 + 95803701.

It is an arithmetic number, because the mean of its divisors is an integer number (95803701).

Almost surely, 2^191607401 is an apocalyptic number.

It is an amenable number.

191607401 is a deficient number, since it is larger than the sum of its proper divisors (1).

191607401 is an equidigital number, since it uses as much as digits as its factorization.

191607401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 191607401 is about 13842.2325150244. The cubic root of 191607401 is about 576.5063474876.

The spelling of 191607401 in words is "one hundred ninety-one million, six hundred seven thousand, four hundred one".