1340454786 has 16 divisors (see below), whose sum is σ = 2924628768. Its totient is φ = 406198400.

The previous prime is 1340454761. The next prime is 1340454803. The reversal of 1340454786 is 6874540431.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10154895 + ... + 10155026.

It is an arithmetic number, because the mean of its divisors is an integer number (182789298).

Almost surely, 2^1340454786 is an apocalyptic number.

1340454786 is an abundant number, since it is smaller than the sum of its proper divisors (1584173982).

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

1340454786 is a wasteful number, since it uses less digits than its factorization.

1340454786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20309937.

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 1340454786 is about 36612.2218118486. The cubic root of 1340454786 is about 1102.5984811325.

It can be divided in two parts, 134045 and 4786, that added together give a palindrome (138831).

The spelling of 1340454786 in words is "one billion, three hundred forty million, four hundred fifty-four thousand, seven hundred eighty-six".