1057080779 has 4 divisors (see below), whose sum is σ = 1069816776. Its totient is φ = 1044344784.

The previous prime is 1057080767. The next prime is 1057080781. The reversal of 1057080779 is 9770807501.

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

It is a cyclic number.

It is not a de Polignac number, because 1057080779 - 2¹⁶ = 1057015243 is a prime.

It is a super-2 number, since 2×1057080779² = 2234839546662493682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057080709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6367874 + ... + 6368039.

It is an arithmetic number, because the mean of its divisors is an integer number (267454194).

Almost surely, 2^1057080779 is an apocalyptic number.

1057080779 is a deficient number, since it is larger than the sum of its proper divisors (12735997).

1057080779 is an equidigital number, since it uses as much as digits as its factorization.

1057080779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12735996.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 1057080779 is about 32512.7787031499. The cubic root of 1057080779 is about 1018.6759633852.

The spelling of 1057080779 in words is "one billion, fifty-seven million, eighty thousand, seven hundred seventy-nine".