1345104440 has 16 divisors (see below), whose sum is σ = 3026485080. Its totient is φ = 538041760.

The previous prime is 1345104407. The next prime is 1345104451. The reversal of 1345104440 is 444015431.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16813766 + ... + 16813845.

Almost surely, 2^1345104440 is an apocalyptic number.

1345104440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345104440 is an abundant number, since it is smaller than the sum of its proper divisors (1681380640).

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

1345104440 is a wasteful number, since it uses less digits than its factorization.

1345104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33627622 (or 33627618 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1345104440 is about 36675.6655018011. The cubic root of 1345104440 is about 1103.8718761030.

Adding to 1345104440 its reverse (444015431), we get a palindrome (1789119871).

The spelling of 1345104440 in words is "one billion, three hundred forty-five million, one hundred four thousand, four hundred forty".