194731947 has 12 divisors (see below), whose sum is σ = 285891424. Its totient is φ = 127692720.

The previous prime is 194731909. The next prime is 194731973. The reversal of 194731947 is 749137491.

It is not a de Polignac number, because 194731947 - 2⁷ = 194731819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194730947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176803 + ... + 177900.

Almost surely, 2^194731947 is an apocalyptic number.

194731947 is a deficient number, since it is larger than the sum of its proper divisors (91159477).

194731947 is a wasteful number, since it uses less digits than its factorization.

194731947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354770 (or 354767 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 194731947 is about 13954.6389061129. The cubic root of 194731947 is about 579.6231668330.

The spelling of 194731947 in words is "one hundred ninety-four million, seven hundred thirty-one thousand, nine hundred forty-seven".