1040037691409 has 2 divisors, whose sum is σ = 1040037691410. Its totient is φ = 1040037691408.

The previous prime is 1040037691367. The next prime is 1040037691417. The reversal of 1040037691409 is 9041967300401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 953448743809 + 86588947600 = 976447^2 + 294260^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040037691409 - 2⁸ = 1040037691153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1040037691409.

It is not a weakly prime, because it can be changed into another prime (1040037691309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520018845704 + 520018845705.

It is an arithmetic number, because the mean of its divisors is an integer number (520018845705).

Almost surely, 2^{1040037691409} is an apocalyptic number.

It is an amenable number.

1040037691409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040037691409 is an equidigital number, since it uses as much as digits as its factorization.

1040037691409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 1040037691409 in words is "one trillion, forty billion, thirty-seven million, six hundred ninety-one thousand, four hundred nine".