149789105549 has 2 divisors, whose sum is σ = 149789105550. Its totient is φ = 149789105548.

The previous prime is 149789105519. The next prime is 149789105573. The reversal of 149789105549 is 945501987941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125291221225 + 24497884324 = 353965^2 + 156518^2 .

It is a cyclic number.

It is not a de Polignac number, because 149789105549 - 2²⁴ = 149772328333 is a prime.

It is a super-2 number, since 2×149789105549² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 149789105491 and 149789105500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149789105519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74894552774 + 74894552775.

It is an arithmetic number, because the mean of its divisors is an integer number (74894552775).

Almost surely, 2^149789105549 is an apocalyptic number.

It is an amenable number.

149789105549 is a deficient number, since it is larger than the sum of its proper divisors (1).

149789105549 is an equidigital number, since it uses as much as digits as its factorization.

149789105549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 62.

The spelling of 149789105549 in words is "one hundred forty-nine billion, seven hundred eighty-nine million, one hundred five thousand, five hundred forty-nine".