194086840 has 16 divisors (see below), whose sum is σ = 436695480. Its totient is φ = 77634720.

The previous prime is 194086819. The next prime is 194086847. The reversal of 194086840 is 48680491.

194086840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×194086840² = 75339402922371200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 4852171 = 194086840 / (1 + 9 + 4 + 0 + 8 + 6 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 194086793 and 194086802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194086847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426046 + ... + 2426125.

Almost surely, 2^194086840 is an apocalyptic number.

194086840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194086840 is an abundant number, since it is smaller than the sum of its proper divisors (242608640).

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

194086840 is a wasteful number, since it uses less digits than its factorization.

194086840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852182 (or 4852178 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 194086840 is about 13931.5053027302. The cubic root of 194086840 is about 578.9824011801.

The spelling of 194086840 in words is "one hundred ninety-four million, eighty-six thousand, eight hundred forty".