1345145440 has 24 divisors (see below), whose sum is σ = 3177906480. Its totient is φ = 538058112.

The previous prime is 1345145419. The next prime is 1345145443. The reversal of 1345145440 is 445415431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345145443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4203420 + ... + 4203739.

It is an arithmetic number, because the mean of its divisors is an integer number (132412770).

Almost surely, 2^1345145440 is an apocalyptic number.

1345145440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345145440 is an abundant number, since it is smaller than the sum of its proper divisors (1832761040).

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

1345145440 is an equidigital number, since it uses as much as digits as its factorization.

1345145440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407174 (or 8407166 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1345145440 is about 36676.2244512709. The cubic root of 1345145440 is about 1103.8830916602.

The spelling of 1345145440 in words is "one billion, three hundred forty-five million, one hundred forty-five thousand, four hundred forty".