191816016 has 40 divisors (see below), whose sum is σ = 566314944. Its totient is φ = 54804480.

The previous prime is 191815961. The next prime is 191816059. The reversal of 191816016 is 610618191.

191816016 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191816016² = 73586767988224512, which contains 22 as substring.

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, 285105 + ... + 285776.

Almost surely, 2^191816016 is an apocalyptic number.

191816016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

191816016 is an abundant number, since it is smaller than the sum of its proper divisors (374498928).

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

191816016 is a wasteful number, since it uses less digits than its factorization.

191816016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570899 (or 570893 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 191816016 is about 13849.7659185995. The cubic root of 191816016 is about 576.7154978121.

The spelling of 191816016 in words is "one hundred ninety-one million, eight hundred sixteen thousand, sixteen".