149821694 has 16 divisors (see below), whose sum is σ = 245379456. Its totient is φ = 68040600.

The previous prime is 149821657. The next prime is 149821703. The reversal of 149821694 is 496128941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30989 + ... + 35495.

It is an arithmetic number, because the mean of its divisors is an integer number (15336216).

Almost surely, 2^149821694 is an apocalyptic number.

149821694 is a deficient number, since it is larger than the sum of its proper divisors (95557762).

149821694 is a wasteful number, since it uses less digits than its factorization.

149821694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its digits is 124416, while the sum is 44.

The square root of 149821694 is about 12240.1672374196. The cubic root of 149821694 is about 531.1186695618.

The spelling of 149821694 in words is "one hundred forty-nine million, eight hundred twenty-one thousand, six hundred ninety-four".