2154240519 has 4 divisors (see below), whose sum is σ = 2872320696. Its totient is φ = 1436160344.

The previous prime is 2154240511. The next prime is 2154240547. The reversal of 2154240519 is 9150424512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2154240519 - 2³ = 2154240511 is a prime.

It is a super-2 number, since 2×2154240519² = 9281504427402778722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2154240519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154240511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359040084 + ... + 359040089.

It is an arithmetic number, because the mean of its divisors is an integer number (718080174).

Almost surely, 2^2154240519 is an apocalyptic number.

2154240519 is a deficient number, since it is larger than the sum of its proper divisors (718080177).

2154240519 is an equidigital number, since it uses as much as digits as its factorization.

2154240519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718080176.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 2154240519 is about 46413.7966449632. The cubic root of 2154240519 is about 1291.5108630240.

The spelling of 2154240519 in words is "two billion, one hundred fifty-four million, two hundred forty thousand, five hundred nineteen".