8205738542 has 4 divisors (see below), whose sum is σ = 12308607816. Its totient is φ = 4102869270.

The previous prime is 8205738539. The next prime is 8205738599. The reversal of 8205738542 is 2458375028.

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

It is a junction number, because it is equal to n+sod(n) for n = 8205738493 and 8205738502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051434634 + ... + 2051434637.

It is an arithmetic number, because the mean of its divisors is an integer number (3077151954).

Almost surely, 2^8205738542 is an apocalyptic number.

8205738542 is a deficient number, since it is larger than the sum of its proper divisors (4102869274).

8205738542 is a wasteful number, since it uses less digits than its factorization.

8205738542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102869273.

The product of its (nonzero) digits is 537600, while the sum is 44.

The square root of 8205738542 is about 90585.5316372322. The cubic root of 8205738542 is about 2016.9999696023. Note that the first 4 decimals are identical.

The spelling of 8205738542 in words is "eight billion, two hundred five million, seven hundred thirty-eight thousand, five hundred forty-two".