2165167938 has 8 divisors (see below), whose sum is σ = 4330335888. Its totient is φ = 721722644.

The previous prime is 2165167909. The next prime is 2165167967. The reversal of 2165167938 is 8397615612.

It is an interprime number because it is at equal distance from previous prime (2165167909) and next prime (2165167967).

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

2165167938 is an admirable 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, 180430656 + ... + 180430667.

It is an arithmetic number, because the mean of its divisors is an integer number (541291986).

Almost surely, 2^2165167938 is an apocalyptic number.

2165167938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2165167938 is a wasteful number, since it uses less digits than its factorization.

2165167938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360861328.

The product of its digits is 544320, while the sum is 48.

The square root of 2165167938 is about 46531.3650992532. The cubic root of 2165167938 is about 1293.6909174540.

The spelling of 2165167938 in words is "two billion, one hundred sixty-five million, one hundred sixty-seven thousand, nine hundred thirty-eight".