981181876 has 6 divisors (see below), whose sum is σ = 1717068290. Its totient is φ = 490590936.

The previous prime is 981181819. The next prime is 981181879. The reversal of 981181876 is 678181189.

It can be written as a sum of positive squares in only one way, i.e., 971818276 + 9363600 = 31174^2 + 3060^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981181879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122647731 + ... + 122647738.

Almost surely, 2^981181876 is an apocalyptic number.

It is an amenable number.

981181876 is a deficient number, since it is larger than the sum of its proper divisors (735886414).

981181876 is a wasteful number, since it uses less digits than its factorization.

981181876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245295473 (or 245295471 counting only the distinct ones).

The product of its digits is 193536, while the sum is 49.

The square root of 981181876 is about 31323.8228190622. The cubic root of 981181876 is about 993.6875285492.

The spelling of 981181876 in words is "nine hundred eighty-one million, one hundred eighty-one thousand, eight hundred seventy-six".