149793816 has 64 divisors (see below), whose sum is σ = 389109600. Its totient is φ = 47996928.

The previous prime is 149793803. The next prime is 149793821. The reversal of 149793816 is 618397941.

149793816 = T₂₂₃ + T₂₂₄ + ... + T₉₆₈.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259320 + ... + 259896.

Almost surely, 2^149793816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149793816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194554800).

149793816 is an abundant number, since it is smaller than the sum of its proper divisors (239315784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149793816 is a wasteful number, since it uses less digits than its factorization.

149793816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 984 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 149793816 is about 12239.0283928096. The cubic root of 149793816 is about 531.0857249676.

The spelling of 149793816 in words is "one hundred forty-nine million, seven hundred ninety-three thousand, eight hundred sixteen".