194875977464 has 64 divisors (see below), whose sum is σ = 442239652800. Its totient is φ = 78590490624.

The previous prime is 194875977463. The next prime is 194875977473. The reversal of 194875977464 is 464779578491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194875977463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5951762 + ... + 5984414.

It is an arithmetic number, because the mean of its divisors is an integer number (6909994575).

Almost surely, 2^194875977464 is an apocalyptic number.

194875977464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

194875977464 is an abundant number, since it is smaller than the sum of its proper divisors (247363675336).

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

194875977464 is a wasteful number, since it uses less digits than its factorization.

194875977464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38952 (or 38948 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 71.

The spelling of 194875977464 in words is "one hundred ninety-four billion, eight hundred seventy-five million, nine hundred seventy-seven thousand, four hundred sixty-four".