194538680 has 32 divisors (see below), whose sum is σ = 500243040. Its totient is φ = 66698880.

The previous prime is 194538677. The next prime is 194538691. The reversal of 194538680 is 86835491.

194538680 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 2×194538680² = 75690596032284800, 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, 347111 + ... + 347670.

It is an arithmetic number, because the mean of its divisors is an integer number (15632595).

Almost surely, 2^194538680 is an apocalyptic number.

194538680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194538680 is an abundant number, since it is smaller than the sum of its proper divisors (305704360).

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

194538680 is a wasteful number, since it uses less digits than its factorization.

194538680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694799 (or 694795 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 194538680 is about 13947.7123572291. The cubic root of 194538680 is about 579.4313491189.

The spelling of 194538680 in words is "one hundred ninety-four million, five hundred thirty-eight thousand, six hundred eighty".