1340407590 has 16 divisors (see below), whose sum is σ = 3216978288. Its totient is φ = 357442016.

The previous prime is 1340407583. The next prime is 1340407591. The reversal of 1340407590 is 957040431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340407591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22340097 + ... + 22340156.

It is an arithmetic number, because the mean of its divisors is an integer number (201061143).

Almost surely, 2^1340407590 is an apocalyptic number.

1340407590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340407590 is an abundant number, since it is smaller than the sum of its proper divisors (1876570698).

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

1340407590 is a wasteful number, since it uses less digits than its factorization.

1340407590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44680263.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1340407590 is about 36611.5772673071. The cubic root of 1340407590 is about 1102.5855405372.

The spelling of 1340407590 in words is "one billion, three hundred forty million, four hundred seven thousand, five hundred ninety".