187943390441 has 8 divisors (see below), whose sum is σ = 193057015944. Its totient is φ = 182831558400.

The previous prime is 187943390417. The next prime is 187943390449. The reversal of 187943390441 is 144093349781.

It can be written as a sum of positive squares in 4 ways, for example, as 65653300441 + 122290090000 = 256229^2 + 349700^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 187943390441 - 2¹⁸ = 187943128297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187943390449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234560 + ... + 656433.

It is an arithmetic number, because the mean of its divisors is an integer number (24132126993).

Almost surely, 2^187943390441 is an apocalyptic number.

It is an amenable number.

187943390441 is a deficient number, since it is larger than the sum of its proper divisors (5113625503).

187943390441 is an equidigital number, since it uses as much as digits as its factorization.

187943390441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896731.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 187943390441 in words is "one hundred eighty-seven billion, nine hundred forty-three million, three hundred ninety thousand, four hundred forty-one".