2138965469 has 8 divisors (see below), whose sum is σ = 2196622560. Its totient is φ = 2081668176.

The previous prime is 2138965463. The next prime is 2138965471. The reversal of 2138965469 is 9645698312.

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 2138965469 - 2⁴ = 2138965453 is a prime.

It is a super-2 number, since 2×2138965469² = 9150346555148779922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2138965469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138965463) 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, 77879 + ... + 101700.

It is an arithmetic number, because the mean of its divisors is an integer number (274577820).

Almost surely, 2^2138965469 is an apocalyptic number.

It is an amenable number.

2138965469 is a deficient number, since it is larger than the sum of its proper divisors (57657091).

2138965469 is a wasteful number, since it uses less digits than its factorization.

2138965469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179899.

The product of its digits is 2799360, while the sum is 53.

The square root of 2138965469 is about 46248.9510043201. The cubic root of 2138965469 is about 1288.4510521523.

The spelling of 2138965469 in words is "two billion, one hundred thirty-eight million, nine hundred sixty-five thousand, four hundred sixty-nine".