1011779542 has 4 divisors (see below), whose sum is σ = 1517669316. Its totient is φ = 505889770.

The previous prime is 1011779459. The next prime is 1011779557. The reversal of 1011779542 is 2459771101.

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

It is a congruent number.

It is an unprimeable number.

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, 252944884 + ... + 252944887.

It is an arithmetic number, because the mean of its divisors is an integer number (379417329).

Almost surely, 2^1011779542 is an apocalyptic number.

1011779542 is a deficient number, since it is larger than the sum of its proper divisors (505889774).

1011779542 is an equidigital number, since it uses as much as digits as its factorization.

1011779542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505889773.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1011779542 is about 31808.4822335175. The cubic root of 1011779542 is about 1003.9111965974.

The spelling of 1011779542 in words is "one billion, eleven million, seven hundred seventy-nine thousand, five hundred forty-two".