149321189249 has 2 divisors, whose sum is σ = 149321189250. Its totient is φ = 149321189248.

The previous prime is 149321189207. The next prime is 149321189257. The reversal of 149321189249 is 942981123941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116321923600 + 32999265649 = 341060^2 + 181657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149321189249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149321189249.

It is not a weakly prime, because it can be changed into another prime (149321189299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74660594624 + 74660594625.

It is an arithmetic number, because the mean of its divisors is an integer number (74660594625).

Almost surely, 2^149321189249 is an apocalyptic number.

It is an amenable number.

149321189249 is a deficient number, since it is larger than the sum of its proper divisors (1).

149321189249 is an equidigital number, since it uses as much as digits as its factorization.

149321189249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 53.

The spelling of 149321189249 in words is "one hundred forty-nine billion, three hundred twenty-one million, one hundred eighty-nine thousand, two hundred forty-nine".