149381237 has 2 divisors, whose sum is σ = 149381238. Its totient is φ = 149381236.

The previous prime is 149381213. The next prime is 149381279. The reversal of 149381237 is 732183941.

149381237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147719716 + 1661521 = 12154^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 149381237 - 2¹⁰ = 149380213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149381237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149381207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74690618 + 74690619.

It is an arithmetic number, because the mean of its divisors is an integer number (74690619).

Almost surely, 2^149381237 is an apocalyptic number.

It is an amenable number.

149381237 is a deficient number, since it is larger than the sum of its proper divisors (1).

149381237 is an equidigital number, since it uses as much as digits as its factorization.

149381237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 149381237 is about 12222.1617155068. The cubic root of 149381237 is about 530.5976845803.

The spelling of 149381237 in words is "one hundred forty-nine million, three hundred eighty-one thousand, two hundred thirty-seven".