194631000000 has 196 divisors, whose sum is σ = 643703166744. Its totient is φ = 51900800000.

The previous prime is 194630999971. The next prime is 194631000037. The reversal of 194631000000 is 136491.

194631000000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×194631000000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 2967562 + ... + 3032438.

Almost surely, 2^194631000000 is an apocalyptic number.

194631000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194631000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321851583372).

194631000000 is an abundant number, since it is smaller than the sum of its proper divisors (449072166744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194631000000 is an frugal number, since it uses more digits than its factorization.

194631000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64922 (or 64887 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 194631000000 its reverse (136491), we get a palindrome (194631136491).

The spelling of 194631000000 in words is "one hundred ninety-four billion, six hundred thirty-one million", and thus it is an aban number.