1340881265 has 16 divisors (see below), whose sum is σ = 1675172880. Its totient is φ = 1029100800.

The previous prime is 1340881253. The next prime is 1340881271. The reversal of 1340881265 is 5621880431.

It can be written as a sum of positive squares in 8 ways, for example, as 247653169 + 1093228096 = 15737^2 + 33064^2 .

It is not a de Polignac number, because 1340881265 - 2¹⁸ = 1340619121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6686 + ... + 52215.

It is an arithmetic number, because the mean of its divisors is an integer number (104698305).

Almost surely, 2^1340881265 is an apocalyptic number.

It is an amenable number.

1340881265 is a deficient number, since it is larger than the sum of its proper divisors (334291615).

1340881265 is a wasteful number, since it uses less digits than its factorization.

1340881265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59092.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1340881265 is about 36618.0456196122. The cubic root of 1340881265 is about 1102.7154029517.

The spelling of 1340881265 in words is "one billion, three hundred forty million, eight hundred eighty-one thousand, two hundred sixty-five".