1240664164 has 12 divisors (see below), whose sum is σ = 2179002364. Its totient is φ = 618092064.

The previous prime is 1240664093. The next prime is 1240664171. The reversal of 1240664164 is 4614660421.

It can be written as a sum of positive squares in 2 ways, for example, as 187142400 + 1053521764 = 13680^2 + 32458^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 558759 + ... + 560974.

Almost surely, 2^1240664164 is an apocalyptic number.

It is an amenable number.

1240664164 is a deficient number, since it is larger than the sum of its proper divisors (938338200).

1240664164 is a wasteful number, since it uses less digits than its factorization.

1240664164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120014 (or 1120012 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 1240664164 is about 35223.0629559668. The cubic root of 1240664164 is about 1074.5288475079.

The spelling of 1240664164 in words is "one billion, two hundred forty million, six hundred sixty-four thousand, one hundred sixty-four".