149216737 has 2 divisors, whose sum is σ = 149216738. Its totient is φ = 149216736.

The previous prime is 149216713. The next prime is 149216741. The reversal of 149216737 is 737612941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95179536 + 54037201 = 9756^2 + 7351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149216737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149216737.

It is not a weakly prime, because it can be changed into another prime (149213737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74608368 + 74608369.

It is an arithmetic number, because the mean of its divisors is an integer number (74608369).

Almost surely, 2^149216737 is an apocalyptic number.

It is an amenable number.

149216737 is a deficient number, since it is larger than the sum of its proper divisors (1).

149216737 is an equidigital number, since it uses as much as digits as its factorization.

149216737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 149216737 is about 12215.4302830477. The cubic root of 149216737 is about 530.4028466842.

The spelling of 149216737 in words is "one hundred forty-nine million, two hundred sixteen thousand, seven hundred thirty-seven".