981176949 has 8 divisors (see below), whose sum is σ = 1453595520. Its totient is φ = 654117948.

The previous prime is 981176899. The next prime is 981177007. The reversal of 981176949 is 949671189.

It is not a de Polignac number, because 981176949 - 2¹² = 981172853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981176895 and 981176904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981276949) 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, 18169917 + ... + 18169970.

It is an arithmetic number, because the mean of its divisors is an integer number (181699440).

Almost surely, 2^981176949 is an apocalyptic number.

It is an amenable number.

981176949 is a deficient number, since it is larger than the sum of its proper divisors (472418571).

981176949 is a wasteful number, since it uses less digits than its factorization.

981176949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36339896 (or 36339890 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 981176949 is about 31323.7441727518. The cubic root of 981176949 is about 993.6858652807.

The spelling of 981176949 in words is "nine hundred eighty-one million, one hundred seventy-six thousand, nine hundred forty-nine".