149271866 has 32 divisors (see below), whose sum is σ = 250776000. Its totient is φ = 66223872.

The previous prime is 149271833. The next prime is 149271869. The reversal of 149271866 is 668172941.

It is not an unprimeable number, because it can be changed into a prime (149271869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173345 + ... + 174203.

It is an arithmetic number, because the mean of its divisors is an integer number (7836750).

Almost surely, 2^149271866 is an apocalyptic number.

149271866 is a deficient number, since it is larger than the sum of its proper divisors (101504134).

149271866 is a wasteful number, since it uses less digits than its factorization.

149271866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its digits is 145152, while the sum is 44.

The square root of 149271866 is about 12217.6866059005. The cubic root of 149271866 is about 530.4681587906.

The spelling of 149271866 in words is "one hundred forty-nine million, two hundred seventy-one thousand, eight hundred sixty-six".