1064171987 has 2 divisors, whose sum is σ = 1064171988. Its totient is φ = 1064171986.

The previous prime is 1064171923. The next prime is 1064172049. The reversal of 1064171987 is 7891714601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1064171987 - 2⁶ = 1064171923 is a prime.

It is a super-2 number, since 2×1064171987² = 2264924035831056338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1064171587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532085993 + 532085994.

It is an arithmetic number, because the mean of its divisors is an integer number (532085994).

Almost surely, 2^1064171987 is an apocalyptic number.

1064171987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064171987 is an equidigital number, since it uses as much as digits as its factorization.

1064171987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 1064171987 is about 32621.6490539641. The cubic root of 1064171987 is about 1020.9487478442.

It can be divided in two parts, 10641 and 71987, that added together give a palindrome (82628).

The spelling of 1064171987 in words is "one billion, sixty-four million, one hundred seventy-one thousand, nine hundred eighty-seven".