9940531166 has 4 divisors (see below), whose sum is σ = 14910796752. Its totient is φ = 4970265582.

The previous prime is 9940531163. The next prime is 9940531219. The reversal of 9940531166 is 6611350499.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940531163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2485132790 + ... + 2485132793.

It is an arithmetic number, because the mean of its divisors is an integer number (3727699188).

Almost surely, 2^9940531166 is an apocalyptic number.

9940531166 is a deficient number, since it is larger than the sum of its proper divisors (4970265586).

9940531166 is a wasteful number, since it uses less digits than its factorization.

9940531166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970265585.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 9940531166 is about 99702.2124428540. The cubic root of 9940531166 is about 2150.1554721536.

The spelling of 9940531166 in words is "nine billion, nine hundred forty million, five hundred thirty-one thousand, one hundred sixty-six".