1040981761 has 4 divisors (see below), whose sum is σ = 1043211312. Its totient is φ = 1038752212.

The previous prime is 1040981729. The next prime is 1040981783. The reversal of 1040981761 is 1671890401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1671890401 = 23 ⋅72690887.

It is a cyclic number.

It is not a de Polignac number, because 1040981761 - 2⁵ = 1040981729 is a prime.

It is a super-2 number, since 2×1040981761² = 2167286053469322242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040981761.

It is not an unprimeable number, because it can be changed into a prime (1040985761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114075 + ... + 1115008.

It is an arithmetic number, because the mean of its divisors is an integer number (260802828).

Almost surely, 2^1040981761 is an apocalyptic number.

It is an amenable number.

1040981761 is a deficient number, since it is larger than the sum of its proper divisors (2229551).

1040981761 is an equidigital number, since it uses as much as digits as its factorization.

1040981761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229550.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1040981761 is about 32264.2489607305. The cubic root of 1040981761 is about 1013.4781113716.

The spelling of 1040981761 in words is "one billion, forty million, nine hundred eighty-one thousand, seven hundred sixty-one".