378530669 has 4 divisors (see below), whose sum is σ = 412942560. Its totient is φ = 344118780.

The previous prime is 378530641. The next prime is 378530689. The reversal of 378530669 is 966035873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966035873 = 11 ⋅87821443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378530669 is a prime.

It is a super-2 number, since 2×378530669² = 286570934747175122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378530639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17205929 + ... + 17205950.

It is an arithmetic number, because the mean of its divisors is an integer number (103235640).

Almost surely, 2^378530669 is an apocalyptic number.

It is an amenable number.

378530669 is a deficient number, since it is larger than the sum of its proper divisors (34411891).

378530669 is a wasteful number, since it uses less digits than its factorization.

378530669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34411890.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 378530669 is about 19455.8646428269. The cubic root of 378530669 is about 723.3808775948.

The spelling of 378530669 in words is "three hundred seventy-eight million, five hundred thirty thousand, six hundred sixty-nine".