1340910732529 has 3 divisors (see below), whose sum is σ = 1340911890507. Its totient is φ = 1340909574552.

The previous prime is 1340910732481. The next prime is 1340910732547. The reversal of 1340910732529 is 9252370190431.

It is a happy number.

The square root of 1340910732529 is 1157977.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 977359618225 + 363551114304 = 988615^2 + 602952^2 .

It is not a de Polignac number, because 1340910732529 - 2⁹ = 1340910732017 is a prime.

It is a super-2 number, since 2×1340910732529² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340910732599) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 578989 + ... + 1736965.

It is an arithmetic number, because the mean of its divisors is an integer number (446970630169).

Almost surely, 2^{1340910732529} is an apocalyptic number.

1340910732529 is the 1157977-th square number.

1340910732529 is the 578989-th centered octagonal number.

It is an amenable number.

1340910732529 is a deficient number, since it is larger than the sum of its proper divisors (1157978).

1340910732529 is an frugal number, since it uses more digits than its factorization.

1340910732529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315954 (or 1157977 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 1340910732529 in words is "one trillion, three hundred forty billion, nine hundred ten million, seven hundred thirty-two thousand, five hundred twenty-nine".