2542323643 has 4 divisors (see below), whose sum is σ = 2580268840. Its totient is φ = 2504378448.

The previous prime is 2542323617. The next prime is 2542323673. The reversal of 2542323643 is 3463232452.

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-2542323643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2542323599 and 2542323608.

It is not an unprimeable number, because it can be changed into a prime (2542323673) 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, 18972498 + ... + 18972631.

It is an arithmetic number, because the mean of its divisors is an integer number (645067210).

Almost surely, 2^2542323643 is an apocalyptic number.

2542323643 is a deficient number, since it is larger than the sum of its proper divisors (37945197).

2542323643 is an equidigital number, since it uses as much as digits as its factorization.

2542323643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37945196.

The product of its digits is 103680, while the sum is 34.

The square root of 2542323643 is about 50421.4601434746. The cubic root of 2542323643 is about 1364.8249258659.

The spelling of 2542323643 in words is "two billion, five hundred forty-two million, three hundred twenty-three thousand, six hundred forty-three".