149834197 has 2 divisors, whose sum is σ = 149834198. Its totient is φ = 149834196.

The previous prime is 149834189. The next prime is 149834221. The reversal of 149834197 is 791438941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140043556 + 9790641 = 11834^2 + 3129^2 .

It is a cyclic number.

It is not a de Polignac number, because 149834197 - 2³ = 149834189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149834137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74917098 + 74917099.

It is an arithmetic number, because the mean of its divisors is an integer number (74917099).

Almost surely, 2^149834197 is an apocalyptic number.

It is an amenable number.

149834197 is a deficient number, since it is larger than the sum of its proper divisors (1).

149834197 is an equidigital number, since it uses as much as digits as its factorization.

149834197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 149834197 is about 12240.6779632502. The cubic root of 149834197 is about 531.1334435504.

The spelling of 149834197 in words is "one hundred forty-nine million, eight hundred thirty-four thousand, one hundred ninety-seven".