194715144 has 128 divisors (see below), whose sum is σ = 616896000. Its totient is φ = 56374272.

The previous prime is 194715139. The next prime is 194715149. The reversal of 194715144 is 441517491.

It is an interprime number because it is at equal distance from previous prime (194715139) and next prime (194715149).

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

It is a junction number, because it is equal to n+sod(n) for n = 194715099 and 194715108.

It is not an unprimeable number, because it can be changed into a prime (194715149) 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 31 ways as a sum of consecutive naturals, for example, 45697 + ... + 49775.

It is an arithmetic number, because the mean of its divisors is an integer number (4819500).

Almost surely, 2^194715144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194715144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308448000).

194715144 is an abundant number, since it is smaller than the sum of its proper divisors (422180856).

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

194715144 is a wasteful number, since it uses less digits than its factorization.

194715144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124 (or 4114 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 194715144 is about 13954.0368352674. The cubic root of 194715144 is about 579.6064948755.

The spelling of 194715144 in words is "one hundred ninety-four million, seven hundred fifteen thousand, one hundred forty-four".