150191813 has 2 divisors, whose sum is σ = 150191814. Its totient is φ = 150191812.

The previous prime is 150191791. The next prime is 150191857. The reversal of 150191813 is 318191051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146724769 + 3467044 = 12113^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 150191813 - 2⁶ = 150191749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150691813) 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, 75095906 + 75095907.

It is an arithmetic number, because the mean of its divisors is an integer number (75095907).

Almost surely, 2^150191813 is an apocalyptic number.

It is an amenable number.

150191813 is a deficient number, since it is larger than the sum of its proper divisors (1).

150191813 is an equidigital number, since it uses as much as digits as its factorization.

150191813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 150191813 is about 12255.2769450551. The cubic root of 150191813 is about 531.5556678205. Note that the first 3 decimals are identical.

The spelling of 150191813 in words is "one hundred fifty million, one hundred ninety-one thousand, eight hundred thirteen".