194064631 has 2 divisors, whose sum is σ = 194064632. Its totient is φ = 194064630.

The previous prime is 194064583. The next prime is 194064671. The reversal of 194064631 is 136460491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194064631 - 2¹⁹ = 193540343 is a prime.

It is a super-2 number, since 2×194064631² = 75322162010332322, which contains 22 as substring.

It is equal to p_10768453 and since 194064631 and 10768453 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194064671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97032315 + 97032316.

It is an arithmetic number, because the mean of its divisors is an integer number (97032316).

Almost surely, 2^194064631 is an apocalyptic number.

194064631 is a deficient number, since it is larger than the sum of its proper divisors (1).

194064631 is an equidigital number, since it uses as much as digits as its factorization.

194064631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 194064631 is about 13930.7082016673. The cubic root of 194064631 is about 578.9603163740.

The spelling of 194064631 in words is "one hundred ninety-four million, sixty-four thousand, six hundred thirty-one".