197030791 has 2 divisors, whose sum is σ = 197030792. Its totient is φ = 197030790.

The previous prime is 197030777. The next prime is 197030803.

197030791 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 197030791 - 2¹⁷ = 196899719 is a prime.

It is a super-2 number, since 2×197030791² = 77642265204171362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197030791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197030191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98515395 + 98515396.

It is an arithmetic number, because the mean of its divisors is an integer number (98515396).

Almost surely, 2^197030791 is an apocalyptic number.

197030791 is a deficient number, since it is larger than the sum of its proper divisors (1).

197030791 is an equidigital number, since it uses as much as digits as its factorization.

197030791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 197030791 is about 14036.7656887190. The cubic root of 197030791 is about 581.8951002274.

It can be divided in two parts, 1970 and 30791, that added together give a square (32761 = 181²).

The spelling of 197030791 in words is "one hundred ninety-seven million, thirty thousand, seven hundred ninety-one".