200191951 has 2 divisors, whose sum is σ = 200191952. Its totient is φ = 200191950.

The previous prime is 200191939. The next prime is 200191963. The reversal of 200191951 is 159191002.

It is a balanced prime because it is at equal distance from previous prime (200191939) and next prime (200191963).

It is a cyclic number.

It is not a de Polignac number, because 200191951 - 2⁵ = 200191919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200191051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100095975 + 100095976.

It is an arithmetic number, because the mean of its divisors is an integer number (100095976).

Almost surely, 2^200191951 is an apocalyptic number.

200191951 is a deficient number, since it is larger than the sum of its proper divisors (1).

200191951 is an equidigital number, since it uses as much as digits as its factorization.

200191951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 200191951 is about 14148.9204888571. The cubic root of 200191951 is about 584.9905771974.

The spelling of 200191951 in words is "two hundred million, one hundred ninety-one thousand, nine hundred fifty-one".