194561136 has 160 divisors (see below), whose sum is σ = 696384000. Its totient is φ = 50526720.

The previous prime is 194561131. The next prime is 194561137. The reversal of 194561136 is 631165491.

194561136 is a `hidden beast` number, since 1 + 9 + 4 + 5 + 611 + 36 = 666.

It is a super-2 number, since 2×194561136² = 75708071283220992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 194561136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194561131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30340 + ... + 36188.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^194561136 is an apocalyptic number.

194561136 is a gapful number since it is divisible by the number (16) 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 194561136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348192000).

194561136 is an abundant number, since it is smaller than the sum of its proper divisors (501822864).

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

194561136 is a wasteful number, since it uses less digits than its factorization.

194561136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884 (or 5872 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 194561136 is about 13948.5173405635. The cubic root of 194561136 is about 579.4536432453.

The spelling of 194561136 in words is "one hundred ninety-four million, five hundred sixty-one thousand, one hundred thirty-six".