971118090 has 96 divisors (see below), whose sum is σ = 2631522816. Its totient is φ = 248192640.

The previous prime is 971118077. The next prime is 971118097. The reversal of 971118090 is 90811179.

It is not an unprimeable number, because it can be changed into a prime (971118097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296904 + ... + 300156.

It is an arithmetic number, because the mean of its divisors is an integer number (27411696).

Almost surely, 2^971118090 is an apocalyptic number.

971118090 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 971118090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315761408).

971118090 is an abundant number, since it is smaller than the sum of its proper divisors (1660404726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971118090 is a wasteful number, since it uses less digits than its factorization.

971118090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 971118090 is about 31162.7676883810. The cubic root of 971118090 is about 990.2784952645.

The spelling of 971118090 in words is "nine hundred seventy-one million, one hundred eighteen thousand, ninety".