193740816 has 40 divisors (see below), whose sum is σ = 505669024. Its totient is φ = 63912960.

The previous prime is 193740803. The next prime is 193740817. The reversal of 193740816 is 618047391.

It is not an unprimeable number, because it can be changed into a prime (193740817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16150 + ... + 25461.

Almost surely, 2^193740816 is an apocalyptic number.

193740816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

193740816 is an abundant number, since it is smaller than the sum of its proper divisors (311928208).

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

193740816 is a wasteful number, since it uses less digits than its factorization.

193740816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41719 (or 41713 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 193740816 is about 13919.0810041468. The cubic root of 193740816 is about 578.6381206114.

The spelling of 193740816 in words is "one hundred ninety-three million, seven hundred forty thousand, eight hundred sixteen".