149488861 has 2 divisors, whose sum is σ = 149488862. Its totient is φ = 149488860.

The previous prime is 149488853. The next prime is 149488873. The reversal of 149488861 is 168884941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149303961 + 184900 = 12219^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 149488861 - 2³ = 149488853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149488841) 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, 74744430 + 74744431.

It is an arithmetic number, because the mean of its divisors is an integer number (74744431).

Almost surely, 2^149488861 is an apocalyptic number.

It is an amenable number.

149488861 is a deficient number, since it is larger than the sum of its proper divisors (1).

149488861 is an equidigital number, since it uses as much as digits as its factorization.

149488861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 49.

The square root of 149488861 is about 12226.5637445686. The cubic root of 149488861 is about 530.7250797333.

The spelling of 149488861 in words is "one hundred forty-nine million, four hundred eighty-eight thousand, eight hundred sixty-one".