2154231450 has 168 divisors, whose sum is σ = 6866593248. Its totient is φ = 492337440.

The previous prime is 2154231439. The next prime is 2154231461. The reversal of 2154231450 is 541324512.

It is an interprime number because it is at equal distance from previous prime (2154231439) and next prime (2154231461).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 250929 + ... + 259371.

Almost surely, 2^2154231450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154231450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3433296624).

2154231450 is an abundant number, since it is smaller than the sum of its proper divisors (4712361798).

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

2154231450 is an equidigital number, since it uses as much as digits as its factorization.

2154231450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480 (or 8460 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2154231450 is about 46413.6989476167. The cubic root of 2154231450 is about 1291.5090506717.

Adding to 2154231450 its reverse (541324512), we get a palindrome (2695555962).

The spelling of 2154231450 in words is "two billion, one hundred fifty-four million, two hundred thirty-one thousand, four hundred fifty".