194490653 has 24 divisors (see below), whose sum is σ = 234201600. Its totient is φ = 160943328.

The previous prime is 194490643. The next prime is 194490679. The reversal of 194490653 is 356094491.

It is not a de Polignac number, because 194490653 - 2¹⁸ = 194228509 is a prime.

It is a super-2 number, since 2×194490653² = 75653228208732818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194490653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194490643) 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, 181403 + ... + 182471.

It is an arithmetic number, because the mean of its divisors is an integer number (9758400).

Almost surely, 2^194490653 is an apocalyptic number.

It is an amenable number.

194490653 is a deficient number, since it is larger than the sum of its proper divisors (39710947).

194490653 is a wasteful number, since it uses less digits than its factorization.

194490653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 194490653 is about 13945.9905707698. The cubic root of 194490653 is about 579.3836625616.

The spelling of 194490653 in words is "one hundred ninety-four million, four hundred ninety thousand, six hundred fifty-three".