1340828919 has 6 divisors (see below), whose sum is σ = 1936752896. Its totient is φ = 893885940.

The previous prime is 1340828893. The next prime is 1340828933. The reversal of 1340828919 is 9198280431.

It is not a de Polignac number, because 1340828919 - 2⁷ = 1340828791 is a prime.

It is a super-2 number, since 2×1340828919² = 3595644380053417122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340828939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74490487 + ... + 74490504.

Almost surely, 2^1340828919 is an apocalyptic number.

1340828919 is a deficient number, since it is larger than the sum of its proper divisors (595923977).

1340828919 is a wasteful number, since it uses less digits than its factorization.

1340828919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148980997 (or 148980994 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1340828919 is about 36617.3308557574. The cubic root of 1340828919 is about 1102.7010533114.

The spelling of 1340828919 in words is "one billion, three hundred forty million, eight hundred twenty-eight thousand, nine hundred nineteen".