378643045 has 16 divisors (see below), whose sum is σ = 506227968. Its totient is φ = 269515840.

The previous prime is 378643009. The next prime is 378643049. The reversal of 378643045 is 540346873.

It is not a de Polignac number, because 378643045 - 2⁷ = 378642917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378642989 and 378643007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378643049) by changing a digit.

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, 70654 + ... + 75823.

It is an arithmetic number, because the mean of its divisors is an integer number (31639248).

Almost surely, 2^378643045 is an apocalyptic number.

It is an amenable number.

378643045 is a deficient number, since it is larger than the sum of its proper divisors (127584923).

378643045 is a wasteful number, since it uses less digits than its factorization.

378643045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146540.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 378643045 is about 19458.7524009120. The cubic root of 378643045 is about 723.4524548919.

The spelling of 378643045 in words is "three hundred seventy-eight million, six hundred forty-three thousand, forty-five".