1264010989 has 2 divisors, whose sum is σ = 1264010990. Its totient is φ = 1264010988.

The previous prime is 1264010971. The next prime is 1264011029. The reversal of 1264010989 is 9890104621.

It is an a-pointer prime, because the next prime (1264011029) can be obtained adding 1264010989 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192320900 + 71690089 = 34530^2 + 8467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264010989 - 2¹⁷ = 1263879917 is a prime.

1264010989 is a modest number, since divided by 10989 gives 1264 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264010959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632005494 + 632005495.

It is an arithmetic number, because the mean of its divisors is an integer number (632005495).

Almost surely, 2^1264010989 is an apocalyptic number.

It is an amenable number.

1264010989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264010989 is an equidigital number, since it uses as much as digits as its factorization.

1264010989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1264010989 is about 35552.9322138133. The cubic root of 1264010989 is about 1081.2271684666.

The spelling of 1264010989 in words is "one billion, two hundred sixty-four million, ten thousand, nine hundred eighty-nine".