1340764650 has 144 divisors (see below), whose sum is σ = 3764071584. Its totient is φ = 354818880.

The previous prime is 1340764643. The next prime is 1340764669. The reversal of 1340764650 is 564670431.

It is a happy number.

1340764650 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 7 + 646 + 5 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1980112 + ... + 1980788.

It is an arithmetic number, because the mean of its divisors is an integer number (26139386).

Almost surely, 2^1340764650 is an apocalyptic number.

1340764650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340764650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1882035792).

1340764650 is an abundant number, since it is smaller than the sum of its proper divisors (2423306934).

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

1340764650 is a wasteful number, since it uses less digits than its factorization.

1340764650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1340764650 is about 36616.4532689882. The cubic root of 1340764650 is about 1102.6834347011.

The spelling of 1340764650 in words is "one billion, three hundred forty million, seven hundred sixty-four thousand, six hundred fifty".