194641972 has 48 divisors (see below), whose sum is σ = 400724352. Its totient is φ = 81002880.

The previous prime is 194641957. The next prime is 194641981. The reversal of 194641972 is 279146491.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141078 + ... + 142450.

It is an arithmetic number, because the mean of its divisors is an integer number (8348424).

Almost surely, 2^194641972 is an apocalyptic number.

It is an amenable number.

194641972 is an abundant number, since it is smaller than the sum of its proper divisors (206082380).

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

194641972 is a wasteful number, since it uses less digits than its factorization.

194641972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1526 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 194641972 is about 13951.4146952917. The cubic root of 194641972 is about 579.5338823415.

It can be divided in two parts, 1946419 and 72, that added together give a palindrome (1946491).

The spelling of 194641972 in words is "one hundred ninety-four million, six hundred forty-one thousand, nine hundred seventy-two".