149805511 has 2 divisors, whose sum is σ = 149805512. Its totient is φ = 149805510.

The previous prime is 149805437. The next prime is 149805529. The reversal of 149805511 is 115508941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149805511 - 2⁹ = 149804999 is a prime.

It is a super-2 number, since 2×149805511² = 44883382251942242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149805541) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74902755 + 74902756.

It is an arithmetic number, because the mean of its divisors is an integer number (74902756).

Almost surely, 2^149805511 is an apocalyptic number.

149805511 is a deficient number, since it is larger than the sum of its proper divisors (1).

149805511 is an equidigital number, since it uses as much as digits as its factorization.

149805511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 149805511 is about 12239.5061583383. The cubic root of 149805511 is about 531.0995459341.

The spelling of 149805511 in words is "one hundred forty-nine million, eight hundred five thousand, five hundred eleven".