2166739071 has 8 divisors (see below), whose sum is σ = 3301697664. Its totient is φ = 1238136600.

The previous prime is 2166739067. The next prime is 2166739073. The reversal of 2166739071 is 1709376612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2166739071 - 2² = 2166739067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166739073) 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, 51589005 + ... + 51589046.

It is an arithmetic number, because the mean of its divisors is an integer number (412712208).

Almost surely, 2^2166739071 is an apocalyptic number.

2166739071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2166739071 is a deficient number, since it is larger than the sum of its proper divisors (1134958593).

2166739071 is a wasteful number, since it uses less digits than its factorization.

2166739071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103178061.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 2166739071 is about 46548.2445533663. The cubic root of 2166739071 is about 1294.0037598621.

The spelling of 2166739071 in words is "two billion, one hundred sixty-six million, seven hundred thirty-nine thousand, seventy-one".