1340451515 has 32 divisors (see below), whose sum is σ = 1798384896. Its totient is φ = 952796160.

The previous prime is 1340451473. The next prime is 1340451521. The reversal of 1340451515 is 5151540431.

It is not a de Polignac number, because 1340451515 - 2⁶ = 1340451451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182759 + ... + 189951.

It is an arithmetic number, because the mean of its divisors is an integer number (56199528).

Almost surely, 2^1340451515 is an apocalyptic number.

1340451515 is a deficient number, since it is larger than the sum of its proper divisors (457933381).

1340451515 is a wasteful number, since it uses less digits than its factorization.

1340451515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7319.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1340451515 is about 36612.1771409459. The cubic root of 1340451515 is about 1102.5975842721.

Adding to 1340451515 its reverse (5151540431), we get a palindrome (6491991946).

The spelling of 1340451515 in words is "one billion, three hundred forty million, four hundred fifty-one thousand, five hundred fifteen".