197494741 has 2 divisors, whose sum is σ = 197494742. Its totient is φ = 197494740.

The previous prime is 197494723. The next prime is 197494747. The reversal of 197494741 is 147494791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158382225 + 39112516 = 12585^2 + 6254^2 .

It is a cyclic number.

It is not a de Polignac number, because 197494741 - 2⁷ = 197494613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197494691 and 197494700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197494747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98747370 + 98747371.

It is an arithmetic number, because the mean of its divisors is an integer number (98747371).

Almost surely, 2^197494741 is an apocalyptic number.

It is an amenable number.

197494741 is a deficient number, since it is larger than the sum of its proper divisors (1).

197494741 is an equidigital number, since it uses as much as digits as its factorization.

197494741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 197494741 is about 14053.2822144864. The cubic root of 197494741 is about 582.3514732419.

The spelling of 197494741 in words is "one hundred ninety-seven million, four hundred ninety-four thousand, seven hundred forty-one".