197408741 has 2 divisors, whose sum is σ = 197408742. Its totient is φ = 197408740.

The previous prime is 197408737. The next prime is 197408753. The reversal of 197408741 is 147804791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197402500 + 6241 = 14050^2 + 79^2 .

It is a cyclic number.

It is not a de Polignac number, because 197408741 - 2² = 197408737 is a prime.

It is a super-2 number, since 2×197408741² = 77940422046410162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197408711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98704370 + 98704371.

It is an arithmetic number, because the mean of its divisors is an integer number (98704371).

Almost surely, 2^197408741 is an apocalyptic number.

It is an amenable number.

197408741 is a deficient number, since it is larger than the sum of its proper divisors (1).

197408741 is an equidigital number, since it uses as much as digits as its factorization.

197408741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 197408741 is about 14050.2220978887. Note that the first 3 decimals coincide. The cubic root of 197408741 is about 582.2669317537.

The spelling of 197408741 in words is "one hundred ninety-seven million, four hundred eight thousand, seven hundred forty-one".