1340164138 has 8 divisors (see below), whose sum is σ = 2097648288. Its totient is φ = 640948044.

The previous prime is 1340164129. The next prime is 1340164139. The reversal of 1340164138 is 8314610431.

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

It is not an unprimeable number, because it can be changed into a prime (1340164139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14566956 + ... + 14567047.

It is an arithmetic number, because the mean of its divisors is an integer number (262206036).

Almost surely, 2^1340164138 is an apocalyptic number.

1340164138 is a deficient number, since it is larger than the sum of its proper divisors (757484150).

1340164138 is a wasteful number, since it uses less digits than its factorization.

1340164138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29134028.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1340164138 is about 36608.2523210273. The cubic root of 1340164138 is about 1102.5187839999.

Adding to 1340164138 its reverse (8314610431), we get a palindrome (9654774569).

The spelling of 1340164138 in words is "one billion, three hundred forty million, one hundred sixty-four thousand, one hundred thirty-eight".