378350661 has 16 divisors (see below), whose sum is σ = 545678784. Its totient is φ = 231800064.

The previous prime is 378350647. The next prime is 378350669. The reversal of 378350661 is 166053873.

It is not a de Polignac number, because 378350661 - 2⁶ = 378350597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378350669) 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, 12516 + ... + 30221.

It is an arithmetic number, because the mean of its divisors is an integer number (34104924).

Almost surely, 2^378350661 is an apocalyptic number.

It is an amenable number.

378350661 is a deficient number, since it is larger than the sum of its proper divisors (167328123).

378350661 is a wasteful number, since it uses less digits than its factorization.

378350661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42980.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 378350661 is about 19451.2380325778. The cubic root of 378350661 is about 723.2661929277.

The spelling of 378350661 in words is "three hundred seventy-eight million, three hundred fifty thousand, six hundred sixty-one".