149143811 has 2 divisors, whose sum is σ = 149143812. Its totient is φ = 149143810.

The previous prime is 149143793. The next prime is 149143837. The reversal of 149143811 is 118341941.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149143811 - 2⁶ = 149143747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (149140811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74571905 + 74571906.

It is an arithmetic number, because the mean of its divisors is an integer number (74571906).

Almost surely, 2^149143811 is an apocalyptic number.

149143811 is a deficient number, since it is larger than the sum of its proper divisors (1).

149143811 is an equidigital number, since it uses as much as digits as its factorization.

149143811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 149143811 is about 12212.4449231102. Note that the first 3 decimals coincide. The cubic root of 149143811 is about 530.3164255007.

The spelling of 149143811 in words is "one hundred forty-nine million, one hundred forty-three thousand, eight hundred eleven".