149861293 has 2 divisors, whose sum is σ = 149861294. Its totient is φ = 149861292.

The previous prime is 149861287. The next prime is 149861339. The reversal of 149861293 is 392168941.

It is a happy number.

149861293 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129095044 + 20766249 = 11362^2 + 4557^2 .

It is a cyclic number.

It is not a de Polignac number, because 149861293 - 2¹⁷ = 149730221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149861203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74930646 + 74930647.

It is an arithmetic number, because the mean of its divisors is an integer number (74930647).

Almost surely, 2^149861293 is an apocalyptic number.

It is an amenable number.

149861293 is a deficient number, since it is larger than the sum of its proper divisors (1).

149861293 is an equidigital number, since it uses as much as digits as its factorization.

149861293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 149861293 is about 12241.7847146566. The cubic root of 149861293 is about 531.1654583255.

The spelling of 149861293 in words is "one hundred forty-nine million, eight hundred sixty-one thousand, two hundred ninety-three".