1340148817 has 16 divisors (see below), whose sum is σ = 1585050624. Its totient is φ = 1108800000.

The previous prime is 1340148791. The next prime is 1340148829. The reversal of 1340148817 is 7188410431.

It is a de Polignac number, because none of the positive numbers 2^k-1340148817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340148847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79317 + ... + 94717.

It is an arithmetic number, because the mean of its divisors is an integer number (99065664).

Almost surely, 2^1340148817 is an apocalyptic number.

It is an amenable number.

1340148817 is a deficient number, since it is larger than the sum of its proper divisors (244901807).

1340148817 is a wasteful number, since it uses less digits than its factorization.

1340148817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15840.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1340148817 is about 36608.0430643322. The cubic root of 1340148817 is about 1102.5145825856.

The spelling of 1340148817 in words is "one billion, three hundred forty million, one hundred forty-eight thousand, eight hundred seventeen".