1340088138 has 96 divisors (see below), whose sum is σ = 3241667520. Its totient is φ = 413372160.

The previous prime is 1340088103. The next prime is 1340088179. The reversal of 1340088138 is 8318800431.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 502653 + ... + 505311.

It is an arithmetic number, because the mean of its divisors is an integer number (33767370).

Almost surely, 2^1340088138 is an apocalyptic number.

1340088138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340088138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620833760).

1340088138 is an abundant number, since it is smaller than the sum of its proper divisors (1901579382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340088138 is a wasteful number, since it uses less digits than its factorization.

1340088138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754 (or 2742 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1340088138 is about 36607.2142889895. The cubic root of 1340088138 is about 1102.4979425201.

Adding to 1340088138 its reverse (8318800431), we get a palindrome (9658888569).

The spelling of 1340088138 in words is "one billion, three hundred forty million, eighty-eight thousand, one hundred thirty-eight".