1040348561 has 16 divisors (see below), whose sum is σ = 1229349888. Its totient is φ = 861537600.

The previous prime is 1040348549. The next prime is 1040348611. The reversal of 1040348561 is 1658430401.

It is a de Polignac number, because none of the positive numbers 2^k-1040348561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1040348261) 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, 139811 + ... + 147063.

It is an arithmetic number, because the mean of its divisors is an integer number (76834368).

Almost surely, 2^1040348561 is an apocalyptic number.

It is an amenable number.

1040348561 is a deficient number, since it is larger than the sum of its proper divisors (189001327).

1040348561 is an equidigital number, since it uses as much as digits as its factorization.

1040348561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7952.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1040348561 is about 32254.4347493488. The cubic root of 1040348561 is about 1013.2725795924.

Adding to 1040348561 its reverse (1658430401), we get a palindrome (2698778962).

The spelling of 1040348561 in words is "one billion, forty million, three hundred forty-eight thousand, five hundred sixty-one".