193380978 has 16 divisors (see below), whose sum is σ = 442013760. Its totient is φ = 55251696.

The previous prime is 193380977. The next prime is 193380997. The reversal of 193380978 is 879083391.

It is not an unprimeable number, because it can be changed into a prime (193380977) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2302113 + ... + 2302196.

It is an arithmetic number, because the mean of its divisors is an integer number (27625860).

Almost surely, 2^193380978 is an apocalyptic number.

193380978 is an abundant number, since it is smaller than the sum of its proper divisors (248632782).

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

193380978 is a wasteful number, since it uses less digits than its factorization.

193380978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604321.

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

The square root of 193380978 is about 13906.1489277226. The cubic root of 193380978 is about 578.2796605663.

The spelling of 193380978 in words is "one hundred ninety-three million, three hundred eighty thousand, nine hundred seventy-eight".