2519990243 has 4 divisors (see below), whose sum is σ = 2524142400. Its totient is φ = 2515838088.

The previous prime is 2519990183. The next prime is 2519990309. The reversal of 2519990243 is 3420999152.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2519990243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2519990194 and 2519990203.

It is not an unprimeable number, because it can be changed into a prime (2519993243) 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, 2075168 + ... + 2076381.

It is an arithmetic number, because the mean of its divisors is an integer number (631035600).

Almost surely, 2^2519990243 is an apocalyptic number.

2519990243 is a deficient number, since it is larger than the sum of its proper divisors (4152157).

2519990243 is an equidigital number, since it uses as much as digits as its factorization.

2519990243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4152156.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 2519990243 is about 50199.5044099043. The cubic root of 2519990243 is about 1360.8166669046.

The spelling of 2519990243 in words is "two billion, five hundred nineteen million, nine hundred ninety thousand, two hundred forty-three".