1340189396 has 216 divisors, whose sum is σ = 3269016576. Its totient is φ = 475735680.

The previous prime is 1340189371. The next prime is 1340189497. The reversal of 1340189396 is 6939810431.

It is a super-2 number, since 2×1340189396² = 3592215234301689632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 28514645 + ... + 28514691.

It is an arithmetic number, because the mean of its divisors is an integer number (15134336).

Almost surely, 2^1340189396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340189396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634508288).

1340189396 is an abundant number, since it is smaller than the sum of its proper divisors (1928827180).

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

1340189396 is a wasteful number, since it uses less digits than its factorization.

1340189396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1340189396 is about 36608.5972962636. The cubic root of 1340189396 is about 1102.5257103268.

The spelling of 1340189396 in words is "one billion, three hundred forty million, one hundred eighty-nine thousand, three hundred ninety-six".