2154554923 has 8 divisors (see below), whose sum is σ = 2279030688. Its totient is φ = 2032645824.

The previous prime is 2154554911. The next prime is 2154554929. The reversal of 2154554923 is 3294554512.

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 2154554923 - 2²⁵ = 2121000491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154554929) 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, 639940 + ... + 643297.

It is an arithmetic number, because the mean of its divisors is an integer number (284878836).

Almost surely, 2^2154554923 is an apocalyptic number.

2154554923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2154554923 is a deficient number, since it is larger than the sum of its proper divisors (124475765).

2154554923 is a wasteful number, since it uses less digits than its factorization.

2154554923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283333.

The product of its digits is 216000, while the sum is 40.

The square root of 2154554923 is about 46417.1834884453. The cubic root of 2154554923 is about 1291.5736904915.

The spelling of 2154554923 in words is "two billion, one hundred fifty-four million, five hundred fifty-four thousand, nine hundred twenty-three".