1345749880 has 32 divisors (see below), whose sum is σ = 3079263600. Its totient is φ = 529175296.

The previous prime is 1345749877. The next prime is 1345749893. The reversal of 1345749880 is 889475431.

It is a super-2 number, since 2×1345749880² = 3622085479040028800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282757 + ... + 287476.

Almost surely, 2^1345749880 is an apocalyptic number.

1345749880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345749880 is an abundant number, since it is smaller than the sum of its proper divisors (1733513720).

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

1345749880 is a wasteful number, since it uses less digits than its factorization.

1345749880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570303 (or 570299 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 1345749880 is about 36684.4637414805. The cubic root of 1345749880 is about 1104.0484098880.

The spelling of 1345749880 in words is "one billion, three hundred forty-five million, seven hundred forty-nine thousand, eight hundred eighty".