2138426469 has 12 divisors (see below), whose sum is σ = 3188478592. Its totient is φ = 1379629800.

The previous prime is 2138426467. The next prime is 2138426513. The reversal of 2138426469 is 9646248312.

2138426469 is a `hidden beast` number, since 2 + 1 + 384 + 264 + 6 + 9 = 666.

It is not a de Polignac number, because 2138426469 - 2¹ = 2138426467 is a prime.

It is a super-2 number, since 2×2138426469² = 9145735526639615922, 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 (2138426461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3832027 + ... + 3832584.

Almost surely, 2^2138426469 is an apocalyptic number.

It is an amenable number.

2138426469 is a deficient number, since it is larger than the sum of its proper divisors (1050052123).

2138426469 is a wasteful number, since it uses less digits than its factorization.

2138426469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664648 (or 7664645 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 2138426469 is about 46243.1234779832. The cubic root of 2138426469 is about 1288.3428170468.

The spelling of 2138426469 in words is "two billion, one hundred thirty-eight million, four hundred twenty-six thousand, four hundred sixty-nine".