1378045345 has 16 divisors (see below), whose sum is σ = 1785058560. Its totient is φ = 1018139584.

The previous prime is 1378045321. The next prime is 1378045369. The reversal of 1378045345 is 5435408731.

It is an interprime number because it is at equal distance from previous prime (1378045321) and next prime (1378045369).

It is a cyclic number.

It is not a de Polignac number, because 1378045345 - 2¹¹ = 1378043297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1378045298 and 1378045307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203269 + ... + 209938.

It is an arithmetic number, because the mean of its divisors is an integer number (111566160).

Almost surely, 2^1378045345 is an apocalyptic number.

It is an amenable number.

1378045345 is a deficient number, since it is larger than the sum of its proper divisors (407013215).

1378045345 is a wasteful number, since it uses less digits than its factorization.

1378045345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413264.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 1378045345 is about 37122.0331474449. The cubic root of 1378045345 is about 1112.8103837911.

The spelling of 1378045345 in words is "one billion, three hundred seventy-eight million, forty-five thousand, three hundred forty-five".