2166739069 has 8 divisors (see below), whose sum is σ = 2403779040. Its totient is φ = 1936376400.

The previous prime is 2166739067. The next prime is 2166739073. The reversal of 2166739069 is 9609376612.

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

It is a cyclic number.

It is not a de Polignac number, because 2166739069 - 2¹ = 2166739067 is a prime.

It is a super-2 number, since 2×2166739069² = 9389516386261973522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166739067) 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, 1668642 + ... + 1669939.

It is an arithmetic number, because the mean of its divisors is an integer number (300472380).

Almost surely, 2^2166739069 is an apocalyptic number.

It is an amenable number.

2166739069 is a deficient number, since it is larger than the sum of its proper divisors (237039971).

2166739069 is a wasteful number, since it uses less digits than its factorization.

2166739069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338651.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 2166739069 is about 46548.2445318833. The cubic root of 2166739069 is about 1294.0037594639.

The spelling of 2166739069 in words is "two billion, one hundred sixty-six million, seven hundred thirty-nine thousand, sixty-nine".