Search a number
-
+
197783801 is a prime number
BaseRepresentation
bin10111100100111…
…11000011111001
3111210011110100222
423302133003321
5401113040201
631343105425
74621064105
oct1362370371
9453143328
10197783801
11a1709996
12562a2275
1331c8c647
141c3a6905
151256c91b
hexbc9f0f9

197783801 has 2 divisors, whose sum is σ = 197783802. Its totient is φ = 197783800.

The previous prime is 197783783. The next prime is 197783809. The reversal of 197783801 is 108387791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162690025 + 35093776 = 12755^2 + 5924^2 .

It is a cyclic number.

It is not a de Polignac number, because 197783801 - 26 = 197783737 is a prime.

It is not a weakly prime, because it can be changed into another prime (197783809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98891900 + 98891901.

It is an arithmetic number, because the mean of its divisors is an integer number (98891901).

Almost surely, 2197783801 is an apocalyptic number.

It is an amenable number.

197783801 is a deficient number, since it is larger than the sum of its proper divisors (1).

197783801 is an equidigital number, since it uses as much as digits as its factorization.

197783801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 197783801 is about 14063.5628842765. The cubic root of 197783801 is about 582.6354511950.

The spelling of 197783801 in words is "one hundred ninety-seven million, seven hundred eighty-three thousand, eight hundred one".