149761871 has 8 divisors (see below), whose sum is σ = 171586464. Its totient is φ = 128044800.

The previous prime is 149761861. The next prime is 149761873. The reversal of 149761871 is 178167941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149761871 - 2¹⁴ = 149745487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149761873) 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 in 7 ways as a sum of consecutive naturals, for example, 23870 + ... + 29483.

It is an arithmetic number, because the mean of its divisors is an integer number (21448308).

Almost surely, 2^149761871 is an apocalyptic number.

149761871 is a deficient number, since it is larger than the sum of its proper divisors (21824593).

149761871 is an equidigital number, since it uses as much as digits as its factorization.

149761871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53761.

The product of its digits is 84672, while the sum is 44.

The square root of 149761871 is about 12237.7232768191. The cubic root of 149761871 is about 531.0479692042.

The spelling of 149761871 in words is "one hundred forty-nine million, seven hundred sixty-one thousand, eight hundred seventy-one".