1340621615 has 8 divisors (see below), whose sum is σ = 1703378160. Its totient is φ = 1009409152.

The previous prime is 1340621609. The next prime is 1340621617. The reversal of 1340621615 is 5161260431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340621615 - 2¹⁰ = 1340620591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340621617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7885925 + ... + 7886094.

It is an arithmetic number, because the mean of its divisors is an integer number (212922270).

Almost surely, 2^1340621615 is an apocalyptic number.

1340621615 is a deficient number, since it is larger than the sum of its proper divisors (362756545).

1340621615 is a wasteful number, since it uses less digits than its factorization.

1340621615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15772041.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1340621615 is about 36614.5000648650. The cubic root of 1340621615 is about 1102.6442212732.

It can be divided in two parts, 134062161 and 5, that multiplied together give a triangular number (670310805 = T₃₆₆₁₄).

The spelling of 1340621615 in words is "one billion, three hundred forty million, six hundred twenty-one thousand, six hundred fifteen".