1081241779 has 8 divisors (see below), whose sum is σ = 1108040960. Its totient is φ = 1054756296.

The previous prime is 1081241761. The next prime is 1081241809. The reversal of 1081241779 is 9771421801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081241779 - 2¹⁵ = 1081209011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081241719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71439 + ... + 85240.

It is an arithmetic number, because the mean of its divisors is an integer number (138505120).

Almost surely, 2^1081241779 is an apocalyptic number.

1081241779 is a deficient number, since it is larger than the sum of its proper divisors (26799181).

1081241779 is a wasteful number, since it uses less digits than its factorization.

1081241779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156849.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1081241779 is about 32882.2410884660. The cubic root of 1081241779 is about 1026.3786418784.

The spelling of 1081241779 in words is "one billion, eighty-one million, two hundred forty-one thousand, seven hundred seventy-nine".