1345252678 has 64 divisors (see below), whose sum is σ = 2623560192. Its totient is φ = 502145280.

The previous prime is 1345252663. The next prime is 1345252693. The reversal of 1345252678 is 8762525431.

It is an interprime number because it is at equal distance from previous prime (1345252663) and next prime (1345252693).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349050 + ... + 352882.

It is an arithmetic number, because the mean of its divisors is an integer number (40993128).

Almost surely, 2^1345252678 is an apocalyptic number.

1345252678 is a deficient number, since it is larger than the sum of its proper divisors (1278307514).

1345252678 is a wasteful number, since it uses less digits than its factorization.

1345252678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949.

The product of its digits is 403200, while the sum is 43.

The square root of 1345252678 is about 36677.6863774148. The cubic root of 1345252678 is about 1103.9124255562.

The spelling of 1345252678 in words is "one billion, three hundred forty-five million, two hundred fifty-two thousand, six hundred seventy-eight".