1345533678 has 24 divisors (see below), whose sum is σ = 3068761800. Its totient is φ = 424905264.

The previous prime is 1345533671. The next prime is 1345533691. The reversal of 1345533678 is 8763355431.

1345533678 is a `hidden beast` number, since 1 + 3 + 45 + 533 + 6 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345533671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1966813 + ... + 1967496.

It is an arithmetic number, because the mean of its divisors is an integer number (127865075).

Almost surely, 2^1345533678 is an apocalyptic number.

1345533678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1345533678 is an abundant number, since it is smaller than the sum of its proper divisors (1723228122).

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

1345533678 is a wasteful number, since it uses less digits than its factorization.

1345533678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934336 (or 3934333 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 1345533678 is about 36681.5168443182. The cubic root of 1345533678 is about 1103.9892829379.

The spelling of 1345533678 in words is "one billion, three hundred forty-five million, five hundred thirty-three thousand, six hundred seventy-eight".