2154469838 has 8 divisors (see below), whose sum is σ = 3232448688. Its totient is φ = 1076986944.

The previous prime is 2154469829. The next prime is 2154469841. The reversal of 2154469838 is 8389644512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112931 + ... + 130622.

It is an arithmetic number, because the mean of its divisors is an integer number (404056086).

Almost surely, 2^2154469838 is an apocalyptic number.

2154469838 is a deficient number, since it is larger than the sum of its proper divisors (1077978850).

2154469838 is a wasteful number, since it uses less digits than its factorization.

2154469838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247978.

The product of its digits is 1658880, while the sum is 50.

The square root of 2154469838 is about 46416.2669545925. The cubic root of 2154469838 is about 1291.5566885278.

The spelling of 2154469838 in words is "two billion, one hundred fifty-four million, four hundred sixty-nine thousand, eight hundred thirty-eight".