194033406840 has 512 divisors, whose sum is σ = 755080704000. Its totient is φ = 38766182400.

The previous prime is 194033406839. The next prime is 194033406859. The reversal of 194033406840 is 48604330491.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 194033406792 and 194033406801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25363336 + ... + 25370984.

It is an arithmetic number, because the mean of its divisors is an integer number (1474767000).

Almost surely, 2^194033406840 is an apocalyptic number.

194033406840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194033406840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377540352000).

194033406840 is an abundant number, since it is smaller than the sum of its proper divisors (561047297160).

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

194033406840 is a wasteful number, since it uses less digits than its factorization.

194033406840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807 (or 7803 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

It can be divided in two parts, 19403 and 3406840, that added together give a palindrome (3426243).

The spelling of 194033406840 in words is "one hundred ninety-four billion, thirty-three million, four hundred six thousand, eight hundred forty".