1026131987 has 2 divisors, whose sum is σ = 1026131988. Its totient is φ = 1026131986.

The previous prime is 1026131947. The next prime is 1026132007. The reversal of 1026131987 is 7891316201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1026131987 - 2⁸ = 1026131731 is a prime.

It is a super-3 number, since 3×1026131987³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1026131987.

It is not a weakly prime, because it can be changed into another prime (1026131947) 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 as a sum of consecutive naturals, namely, 513065993 + 513065994.

It is an arithmetic number, because the mean of its divisors is an integer number (513065994).

Almost surely, 2^1026131987 is an apocalyptic number.

1026131987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026131987 is an equidigital number, since it uses as much as digits as its factorization.

1026131987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1026131987 is about 32033.2949756968. The cubic root of 1026131987 is about 1008.6358694102.

The spelling of 1026131987 in words is "one billion, twenty-six million, one hundred thirty-one thousand, nine hundred eighty-seven".