971121692 has 12 divisors (see below), whose sum is σ = 1788908520. Its totient is φ = 460004976.

The previous prime is 971121689. The next prime is 971121707. The reversal of 971121692 is 296121179.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6388883 + ... + 6389034.

It is an arithmetic number, because the mean of its divisors is an integer number (149075710).

Almost surely, 2^971121692 is an apocalyptic number.

It is an amenable number.

971121692 is a deficient number, since it is larger than the sum of its proper divisors (817786828).

971121692 is a wasteful number, since it uses less digits than its factorization.

971121692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12777940 (or 12777938 counting only the distinct ones).

The product of its digits is 13608, while the sum is 38.

The square root of 971121692 is about 31162.8254816536. The cubic root of 971121692 is about 990.2797196192.

The spelling of 971121692 in words is "nine hundred seventy-one million, one hundred twenty-one thousand, six hundred ninety-two".