2154540623 has 8 divisors (see below), whose sum is σ = 2187089520. Its totient is φ = 2122202880.

The previous prime is 2154540613. The next prime is 2154540659. The reversal of 2154540623 is 3260454512.

2154540623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2154540623 - 2¹⁶ = 2154475087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154540623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154540613) 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, 32168 + ... + 73101.

It is an arithmetic number, because the mean of its divisors is an integer number (273386190).

Almost surely, 2^2154540623 is an apocalyptic number.

2154540623 is a deficient number, since it is larger than the sum of its proper divisors (32548897).

2154540623 is a wasteful number, since it uses less digits than its factorization.

2154540623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105577.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2154540623 is about 46417.0294504075. The cubic root of 2154540623 is about 1291.5708330499.

The spelling of 2154540623 in words is "two billion, one hundred fifty-four million, five hundred forty thousand, six hundred twenty-three".