1078575857 has 4 divisors (see below), whose sum is σ = 1079708580. Its totient is φ = 1077443136.

The previous prime is 1078575853. The next prime is 1078575877. The reversal of 1078575857 is 7585758701.

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

It can be written as a sum of positive squares in 2 ways, for example, as 542004961 + 536570896 = 23281^2 + 23164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078575857 - 2² = 1078575853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1078575799 and 1078575808.

It is not an unprimeable number, because it can be changed into a prime (1078575853) 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, 564932 + ... + 566837.

It is an arithmetic number, because the mean of its divisors is an integer number (269927145).

Almost surely, 2^1078575857 is an apocalyptic number.

It is an amenable number.

1078575857 is a deficient number, since it is larger than the sum of its proper divisors (1132723).

1078575857 is an equidigital number, since it uses as much as digits as its factorization.

1078575857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132722.

The product of its (nonzero) digits is 2744000, while the sum is 53.

The square root of 1078575857 is about 32841.6786568531. The cubic root of 1078575857 is about 1025.5343973626.

The spelling of 1078575857 in words is "one billion, seventy-eight million, five hundred seventy-five thousand, eight hundred fifty-seven".