149816 has 16 divisors (see below), whose sum is σ = 286440. Its totient is φ = 73440.

The previous prime is 149803. The next prime is 149827. The reversal of 149816 is 618941.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335 + ... + 641.

2¹⁴⁹⁸¹⁶ is an apocalyptic number.

It is an amenable number.

149816 is a deficient number, since it is larger than the sum of its proper divisors (136624).

149816 is a wasteful number, since it uses less digits than its factorization.

149816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 370 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 149816 is about 387.0607187509. The cubic root of 149816 is about 53.1111941057. Note that the first 4 decimals are identical.

The spelling of 149816 in words is "one hundred forty-nine thousand, eight hundred sixteen".