194974350481 has 9 divisors (see below), whose sum is σ = 196828104123. Its totient is φ = 193137906600.

The previous prime is 194974350419. The next prime is 194974350509. The reversal of 194974350481 is 184053479491.

The square root of 194974350481 is 441559.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 135896186881 + 59078163600 = 368641^2 + 243060^2 .

It is not a de Polignac number, because 194974350481 - 2²⁹ = 194437479569 is a prime.

It is a super-2 number, since 2×194974350481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194971350481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48127906 + ... + 48131956.

It is an arithmetic number, because the mean of its divisors is an integer number (21869789347).

Almost surely, 2^194974350481 is an apocalyptic number.

194974350481 is the 441559-th square number.

194974350481 is the 220780-th centered octagonal number.

It is an amenable number.

194974350481 is a deficient number, since it is larger than the sum of its proper divisors (1853753642).

194974350481 is an frugal number, since it uses more digits than its factorization.

194974350481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320 (or 4160 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 194974350481 in words is "one hundred ninety-four billion, nine hundred seventy-four million, three hundred fifty thousand, four hundred eighty-one".