91830001 has 2 divisors, whose sum is σ = 91830002. Its totient is φ = 91830000.

The previous prime is 91829981. The next prime is 91830023. The reversal of 91830001 is 10003819.

It is an a-pointer prime, because the next prime (91830023) can be obtained adding 91830001 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91221601 + 608400 = 9551^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 91830001 - 2²¹ = 89732849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91830701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45915000 + 45915001.

It is an arithmetic number, because the mean of its divisors is an integer number (45915001).

Almost surely, 2^91830001 is an apocalyptic number.

It is an amenable number.

91830001 is a deficient number, since it is larger than the sum of its proper divisors (1).

91830001 is an equidigital number, since it uses as much as digits as its factorization.

91830001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 91830001 is about 9582.7971386229. The cubic root of 91830001 is about 451.1575154934.

The spelling of 91830001 in words is "ninety-one million, eight hundred thirty thousand, one".