1000540993 has 8 divisors (see below), whose sum is σ = 1015135848. Its totient is φ = 985970304.

The previous prime is 1000540979. The next prime is 1000540997. The reversal of 1000540993 is 3990450001.

It can be written as a sum of positive squares in 4 ways, for example, as 64915249 + 935625744 = 8057^2 + 30588^2 .

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 1000540993 - 2¹³ = 1000532801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000540997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87855 + ... + 98587.

It is an arithmetic number, because the mean of its divisors is an integer number (126891981).

Almost surely, 2^1000540993 is an apocalyptic number.

It is an amenable number.

1000540993 is a deficient number, since it is larger than the sum of its proper divisors (14594855).

1000540993 is a wasteful number, since it uses less digits than its factorization.

1000540993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12083.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1000540993 is about 31631.3292954944. The cubic root of 1000540993 is about 1000.1802984905.

Adding to 1000540993 its reverse (3990450001), we get a palindrome (4990990994).

The spelling of 1000540993 in words is "one billion, five hundred forty thousand, nine hundred ninety-three".