2542638355 has 4 divisors (see below), whose sum is σ = 3051166032. Its totient is φ = 2034110680.

The previous prime is 2542638347. The next prime is 2542638361. The reversal of 2542638355 is 5538362452.

2542638355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2542638355 - 2³ = 2542638347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254263831 + ... + 254263840.

It is an arithmetic number, because the mean of its divisors is an integer number (762791508).

Almost surely, 2^2542638355 is an apocalyptic number.

2542638355 is a deficient number, since it is larger than the sum of its proper divisors (508527677).

2542638355 is an equidigital number, since it uses as much as digits as its factorization.

2542638355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508527676.

The product of its digits is 864000, while the sum is 43.

The square root of 2542638355 is about 50424.5808609254. The cubic root of 2542638355 is about 1364.8812403666.

The spelling of 2542638355 in words is "two billion, five hundred forty-two million, six hundred thirty-eight thousand, three hundred fifty-five".