197061853 has 2 divisors, whose sum is σ = 197061854. Its totient is φ = 197061852.

The previous prime is 197061833. The next prime is 197061871. The reversal of 197061853 is 358160791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 79512889 = 10842^2 + 8917^2 .

It is a cyclic number.

It is not a de Polignac number, because 197061853 - 2²¹ = 194964701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197061833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98530926 + 98530927.

It is an arithmetic number, because the mean of its divisors is an integer number (98530927).

Almost surely, 2^197061853 is an apocalyptic number.

It is an amenable number.

197061853 is a deficient number, since it is larger than the sum of its proper divisors (1).

197061853 is an equidigital number, since it uses as much as digits as its factorization.

197061853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 197061853 is about 14037.8720965822. The cubic root of 197061853 is about 581.9256773024.

The spelling of 197061853 in words is "one hundred ninety-seven million, sixty-one thousand, eight hundred fifty-three".