1000726261531 has 2 divisors, whose sum is σ = 1000726261532. Its totient is φ = 1000726261530.

The previous prime is 1000726261487. The next prime is 1000726261537. The reversal of 1000726261531 is 1351626270001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000726261531 - 2¹⁵ = 1000726228763 is a prime.

It is a super-2 number, since 2×1000726261531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000726261537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500363130765 + 500363130766.

It is an arithmetic number, because the mean of its divisors is an integer number (500363130766).

Almost surely, 2^{1000726261531} is an apocalyptic number.

1000726261531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000726261531 is an equidigital number, since it uses as much as digits as its factorization.

1000726261531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 1000726261531 in words is "one trillion, seven hundred twenty-six million, two hundred sixty-one thousand, five hundred thirty-one".