194657713481 has 16 divisors (see below), whose sum is σ = 253241883648. Its totient is φ = 145086493200.

The previous prime is 194657713421. The next prime is 194657713483. The reversal of 194657713481 is 184317756491.

It is not a de Polignac number, because 194657713481 - 2⁶ = 194657713417 is a prime.

It is a super-2 number, since 2×194657713481² (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 (194657713483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54955235 + ... + 54958776.

It is an arithmetic number, because the mean of its divisors is an integer number (15827617728).

Almost surely, 2^194657713481 is an apocalyptic number.

194657713481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

194657713481 is a deficient number, since it is larger than the sum of its proper divisors (58584170167).

194657713481 is a wasteful number, since it uses less digits than its factorization.

194657713481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109914052.

The product of its digits is 5080320, while the sum is 56.

The spelling of 194657713481 in words is "one hundred ninety-four billion, six hundred fifty-seven million, seven hundred thirteen thousand, four hundred eighty-one".