150981197 has 2 divisors, whose sum is σ = 150981198. Its totient is φ = 150981196.

The previous prime is 150981169. The next prime is 150981227. The reversal of 150981197 is 791189051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147525316 + 3455881 = 12146^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 150981197 - 2⁶ = 150981133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150981167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75490598 + 75490599.

It is an arithmetic number, because the mean of its divisors is an integer number (75490599).

Almost surely, 2^150981197 is an apocalyptic number.

It is an amenable number.

150981197 is a deficient number, since it is larger than the sum of its proper divisors (1).

150981197 is an equidigital number, since it uses as much as digits as its factorization.

150981197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 150981197 is about 12287.4406204059. The cubic root of 150981197 is about 532.4852980725.

The spelling of 150981197 in words is "one hundred fifty million, nine hundred eighty-one thousand, one hundred ninety-seven".