1798706542 has 4 divisors (see below), whose sum is σ = 2698059816. Its totient is φ = 899353270.

The previous prime is 1798706537. The next prime is 1798706543. The reversal of 1798706542 is 2456078971.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798706543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449676634 + ... + 449676637.

It is an arithmetic number, because the mean of its divisors is an integer number (674514954).

Almost surely, 2^1798706542 is an apocalyptic number.

1798706542 is a deficient number, since it is larger than the sum of its proper divisors (899353274).

1798706542 is an equidigital number, since it uses as much as digits as its factorization.

1798706542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899353273.

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 1798706542 is about 42411.1605830352. The cubic root of 1798706542 is about 1216.1489562267.

The spelling of 1798706542 in words is "one billion, seven hundred ninety-eight million, seven hundred six thousand, five hundred forty-two".