2154614784 has 208 divisors, whose sum is σ = 6753053568. Its totient is φ = 598081536.

The previous prime is 2154614773. The next prime is 2154614797. The reversal of 2154614784 is 4874164512.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3182254 + ... + 3182930.

Almost surely, 2^2154614784 is an apocalyptic number.

2154614784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154614784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3376526784).

2154614784 is an abundant number, since it is smaller than the sum of its proper divisors (4598438784).

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

2154614784 is an equidigital number, since it uses as much as digits as its factorization.

2154614784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 726 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 2154614784 is about 46417.8282990491. The cubic root of 2154614784 is about 1291.5856518447.

The spelling of 2154614784 in words is "two billion, one hundred fifty-four million, six hundred fourteen thousand, seven hundred eighty-four".