188820890473 has 4 divisors (see below), whose sum is σ = 189979301008. Its totient is φ = 187662479940.

The previous prime is 188820890443. The next prime is 188820890491. The reversal of 188820890473 is 374098028881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 188820890473 - 2²¹ = 188818793321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188820890443) 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, 579205023 + ... + 579205348.

It is an arithmetic number, because the mean of its divisors is an integer number (47494825252).

Almost surely, 2^188820890473 is an apocalyptic number.

It is an amenable number.

188820890473 is a deficient number, since it is larger than the sum of its proper divisors (1158410535).

188820890473 is a wasteful number, since it uses less digits than its factorization.

188820890473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158410534.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 188820890473 in words is "one hundred eighty-eight billion, eight hundred twenty million, eight hundred ninety thousand, four hundred seventy-three".