149263237 has 2 divisors, whose sum is σ = 149263238. Its totient is φ = 149263236.

The previous prime is 149263223. The next prime is 149263241. The reversal of 149263237 is 732362941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93103201 + 56160036 = 9649^2 + 7494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149263237 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149263196 and 149263205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149264237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74631618 + 74631619.

It is an arithmetic number, because the mean of its divisors is an integer number (74631619).

Almost surely, 2^149263237 is an apocalyptic number.

It is an amenable number.

149263237 is a deficient number, since it is larger than the sum of its proper divisors (1).

149263237 is an equidigital number, since it uses as much as digits as its factorization.

149263237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 149263237 is about 12217.3334652043. Note that the first 3 decimals coincide. The cubic root of 149263237 is about 530.4579369539.

The spelling of 149263237 in words is "one hundred forty-nine million, two hundred sixty-three thousand, two hundred thirty-seven".