971491192 has 16 divisors (see below), whose sum is σ = 2081766960. Its totient is φ = 416353344.

The previous prime is 971491189. The next prime is 971491193. The reversal of 971491192 is 291194179.

It is a super-2 number, since 2×971491192² = 1887590272267161728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971491193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8673973 + ... + 8674084.

It is an arithmetic number, because the mean of its divisors is an integer number (130110435).

Almost surely, 2^971491192 is an apocalyptic number.

It is an amenable number.

971491192 is an abundant number, since it is smaller than the sum of its proper divisors (1110275768).

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

971491192 is a wasteful number, since it uses less digits than its factorization.

971491192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17348070 (or 17348066 counting only the distinct ones).

The product of its digits is 40824, while the sum is 43.

The square root of 971491192 is about 31168.7534559854. The cubic root of 971491192 is about 990.4053001588.

The spelling of 971491192 in words is "nine hundred seventy-one million, four hundred ninety-one thousand, one hundred ninety-two".