2154340530 has 128 divisors (see below), whose sum is σ = 5852528640. Its totient is φ = 563832000.

The previous prime is 2154340511. The next prime is 2154340547. The reversal of 2154340530 is 350434512.

2154340530 is a `hidden beast` number, since 215 + 43 + 405 + 3 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2154340494 and 2154340503.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5624719 + ... + 5625101.

It is an arithmetic number, because the mean of its divisors is an integer number (45722880).

Almost surely, 2^2154340530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154340530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2926264320).

2154340530 is an abundant number, since it is smaller than the sum of its proper divisors (3698188110).

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

2154340530 is a wasteful number, since it uses less digits than its factorization.

2154340530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2154340530 is about 46414.8740168494. The cubic root of 2154340530 is about 1291.5308489221.

The spelling of 2154340530 in words is "two billion, one hundred fifty-four million, three hundred forty thousand, five hundred thirty".