1340800437 has 12 divisors (see below), whose sum is σ = 1845888896. Its totient is φ = 864804720.

The previous prime is 1340800427. The next prime is 1340800441. The reversal of 1340800437 is 7340080431.

It is not a de Polignac number, because 1340800437 - 2⁷ = 1340800309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340800427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351223 + ... + 355019.

Almost surely, 2^1340800437 is an apocalyptic number.

It is an amenable number.

1340800437 is a deficient number, since it is larger than the sum of its proper divisors (505088459).

1340800437 is an frugal number, since it uses more digits than its factorization.

1340800437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7628 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 1340800437 is about 36616.9419394903. The cubic root of 1340800437 is about 1102.6932453668.

Adding to 1340800437 its reverse (7340080431), we get a palindrome (8680880868).

The spelling of 1340800437 in words is "one billion, three hundred forty million, eight hundred thousand, four hundred thirty-seven".