1340544590 has 64 divisors (see below), whose sum is σ = 3013977600. Its totient is φ = 417056640.

The previous prime is 1340544587. The next prime is 1340544599. The reversal of 1340544590 is 954450431.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1340544590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340544599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524636 + ... + 527184.

It is an arithmetic number, because the mean of its divisors is an integer number (47093400).

Almost surely, 2^1340544590 is an apocalyptic number.

1340544590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340544590 is an abundant number, since it is smaller than the sum of its proper divisors (1673433010).

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

1340544590 is a wasteful number, since it uses less digits than its factorization.

1340544590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1340544590 is about 36613.4482123714. The cubic root of 1340544590 is about 1102.6231035079.

The spelling of 1340544590 in words is "one billion, three hundred forty million, five hundred forty-four thousand, five hundred ninety".