150503813 has 2 divisors, whose sum is σ = 150503814. Its totient is φ = 150503812.

The previous prime is 150503809. The next prime is 150503819. The reversal of 150503813 is 318305051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138344644 + 12159169 = 11762^2 + 3487^2 .

It is an emirp because it is prime and its reverse (318305051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150503813 - 2² = 150503809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150503819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75251906 + 75251907.

It is an arithmetic number, because the mean of its divisors is an integer number (75251907).

Almost surely, 2^150503813 is an apocalyptic number.

It is an amenable number.

150503813 is a deficient number, since it is larger than the sum of its proper divisors (1).

150503813 is an equidigital number, since it uses as much as digits as its factorization.

150503813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 150503813 is about 12267.9995516792. Note that the first 3 decimals coincide. The cubic root of 150503813 is about 531.9234878282.

Adding to 150503813 its reverse (318305051), we get a palindrome (468808864).

It can be divided in two parts, 1505038 and 13, that added together give a palindrome (1505051).

The spelling of 150503813 in words is "one hundred fifty million, five hundred three thousand, eight hundred thirteen".