91829851 has 2 divisors, whose sum is σ = 91829852. Its totient is φ = 91829850.

The previous prime is 91829809. The next prime is 91829879. The reversal of 91829851 is 15892819.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91829851 - 2⁷ = 91829723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91829798 and 91829807.

It is not a weakly prime, because it can be changed into another prime (91829891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45914925 + 45914926.

It is an arithmetic number, because the mean of its divisors is an integer number (45914926).

Almost surely, 2^91829851 is an apocalyptic number.

91829851 is a deficient number, since it is larger than the sum of its proper divisors (1).

91829851 is an equidigital number, since it uses as much as digits as its factorization.

91829851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 43.

The square root of 91829851 is about 9582.7893120949. The cubic root of 91829851 is about 451.1572698451.

The spelling of 91829851 in words is "ninety-one million, eight hundred twenty-nine thousand, eight hundred fifty-one".