1345466820 has 48 divisors (see below), whose sum is σ = 3785197248. Its totient is φ = 357087360.

The previous prime is 1345466797. The next prime is 1345466849. The reversal of 1345466820 is 286645431.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40479 + ... + 65798.

It is an arithmetic number, because the mean of its divisors is an integer number (78858276).

Almost surely, 2^1345466820 is an apocalyptic number.

1345466820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345466820 is an abundant number, since it is smaller than the sum of its proper divisors (2439730428).

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

1345466820 is a wasteful number, since it uses less digits than its factorization.

1345466820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106500 (or 106498 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 1345466820 is about 36680.6055020906. The cubic root of 1345466820 is about 1103.9709973215.

The spelling of 1345466820 in words is "one billion, three hundred forty-five million, four hundred sixty-six thousand, eight hundred twenty".