2154223854 has 12 divisors (see below), whose sum is σ = 4667485056. Its totient is φ = 718074612.

The previous prime is 2154223829. The next prime is 2154223873. The reversal of 2154223854 is 4583224512.

It is a super-3 number, since 3×2154223854³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59839534 + ... + 59839569.

It is an arithmetic number, because the mean of its divisors is an integer number (388957088).

Almost surely, 2^2154223854 is an apocalyptic number.

2154223854 is an abundant number, since it is smaller than the sum of its proper divisors (2513261202).

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

2154223854 is a wasteful number, since it uses less digits than its factorization.

2154223854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119679111 (or 119679108 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 2154223854 is about 46413.6171182553. The cubic root of 2154223854 is about 1291.5075326803.

The spelling of 2154223854 in words is "two billion, one hundred fifty-four million, two hundred twenty-three thousand, eight hundred fifty-four".