197137429 has 2 divisors, whose sum is σ = 197137430. Its totient is φ = 197137428.

The previous prime is 197137379. The next prime is 197137433. The reversal of 197137429 is 924731791.

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., 127080529 + 70056900 = 11273^2 + 8370^2 .

It is an emirp because it is prime and its reverse (924731791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197137429 - 2⁹ = 197136917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197137459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98568714 + 98568715.

It is an arithmetic number, because the mean of its divisors is an integer number (98568715).

Almost surely, 2^197137429 is an apocalyptic number.

It is an amenable number.

197137429 is a deficient number, since it is larger than the sum of its proper divisors (1).

197137429 is an equidigital number, since it uses as much as digits as its factorization.

197137429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 43.

The square root of 197137429 is about 14040.5636995101. The cubic root of 197137429 is about 582.0000600292. Note that the first 4 decimals are identical.

The spelling of 197137429 in words is "one hundred ninety-seven million, one hundred thirty-seven thousand, four hundred twenty-nine".