194631969 has 24 divisors (see below), whose sum is σ = 302431968. Its totient is φ = 111014400.

The previous prime is 194631917. The next prime is 194631971. The reversal of 194631969 is 969136491.

194631969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 194631969 - 2¹³ = 194623777 is a prime.

It is a super-2 number, since 2×194631969² = 75763206713633922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (194631979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120769 + ... + 122369.

It is an arithmetic number, because the mean of its divisors is an integer number (12601332).

Almost surely, 2^194631969 is an apocalyptic number.

It is an amenable number.

194631969 is a deficient number, since it is larger than the sum of its proper divisors (107799999).

194631969 is a wasteful number, since it uses less digits than its factorization.

194631969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445 (or 2438 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The square root of 194631969 is about 13951.0561965752. The cubic root of 194631969 is about 579.5239544096.

The spelling of 194631969 in words is "one hundred ninety-four million, six hundred thirty-one thousand, nine hundred sixty-nine".