881973149 has 4 divisors (see below), whose sum is σ = 882946464. Its totient is φ = 880999836.

The previous prime is 881973121. The next prime is 881973161. The reversal of 881973149 is 941379188.

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 881973149 - 2²⁰ = 880924573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 881973097 and 881973106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881973349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485297 + ... + 487110.

It is an arithmetic number, because the mean of its divisors is an integer number (220736616).

Almost surely, 2^881973149 is an apocalyptic number.

It is an amenable number.

881973149 is a deficient number, since it is larger than the sum of its proper divisors (973315).

881973149 is an equidigital number, since it uses as much as digits as its factorization.

881973149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973314.

The product of its digits is 435456, while the sum is 50.

The square root of 881973149 is about 29698.0327462948. The cubic root of 881973149 is about 958.9996629265. Note that the first 3 decimals are identical.

The spelling of 881973149 in words is "eight hundred eighty-one million, nine hundred seventy-three thousand, one hundred forty-nine".