1340451516 has 24 divisors (see below), whose sum is σ = 3131609040. Its totient is φ = 446261632.

The previous prime is 1340451473. The next prime is 1340451521. The reversal of 1340451516 is 6151540431.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59331 + ... + 78746.

It is an arithmetic number, because the mean of its divisors is an integer number (130483710).

Almost surely, 2^1340451516 is an apocalyptic number.

It is an amenable number.

1340451516 is an abundant number, since it is smaller than the sum of its proper divisors (1791157524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340451516 is a wasteful number, since it uses less digits than its factorization.

1340451516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138893 (or 138891 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1340451516 is about 36612.1771546025. The cubic root of 1340451516 is about 1102.5975845462.

Adding to 1340451516 its reverse (6151540431), we get a palindrome (7491991947).

The spelling of 1340451516 in words is "one billion, three hundred forty million, four hundred fifty-one thousand, five hundred sixteen".