184868877421 has 4 divisors (see below), whose sum is σ = 184916515644. Its totient is φ = 184821239200.

The previous prime is 184868877409. The next prime is 184868877527. The reversal of 184868877421 is 124778868481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107298829225 + 77570048196 = 327565^2 + 278514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-184868877421 is a prime.

It is a super-2 number, since 2×184868877421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184868877821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23813290 + ... + 23821051.

It is an arithmetic number, because the mean of its divisors is an integer number (46229128911).

Almost surely, 2^184868877421 is an apocalyptic number.

It is an amenable number.

184868877421 is a deficient number, since it is larger than the sum of its proper divisors (47638223).

184868877421 is an equidigital number, since it uses as much as digits as its factorization.

184868877421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47638222.

The product of its digits is 38535168, while the sum is 64.

The spelling of 184868877421 in words is "one hundred eighty-four billion, eight hundred sixty-eight million, eight hundred seventy-seven thousand, four hundred twenty-one".