1078181845 has 16 divisors (see below), whose sum is σ = 1401411312. Its totient is φ = 791585280.

The previous prime is 1078181843. The next prime is 1078181861. The reversal of 1078181845 is 5481818701.

It can be written as a sum of positive squares in 8 ways, for example, as 95296644 + 982885201 = 9762^2 + 31351^2 .

It is not a de Polignac number, because 1078181845 - 2¹ = 1078181843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078181843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36696 + ... + 59185.

It is an arithmetic number, because the mean of its divisors is an integer number (87588207).

Almost surely, 2^1078181845 is an apocalyptic number.

It is an amenable number.

1078181845 is a deficient number, since it is larger than the sum of its proper divisors (323229467).

1078181845 is a wasteful number, since it uses less digits than its factorization.

1078181845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96072.

The product of its (nonzero) digits is 71680, while the sum is 43.

The square root of 1078181845 is about 32835.6794508656. The cubic root of 1078181845 is about 1025.4095036366.

The spelling of 1078181845 in words is "one billion, seventy-eight million, one hundred eighty-one thousand, eight hundred forty-five".