378161009 has 8 divisors (see below), whose sum is σ = 415371840. Its totient is φ = 342680976.

The previous prime is 378160997. The next prime is 378161023. The reversal of 378161009 is 900161873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378161009 - 2¹² = 378156913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 378161009.

It is not an unprimeable number, because it can be changed into a prime (378161059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432242 + ... + 433115.

It is an arithmetic number, because the mean of its divisors is an integer number (51921480).

Almost surely, 2^378161009 is an apocalyptic number.

It is an amenable number.

378161009 is a deficient number, since it is larger than the sum of its proper divisors (37210831).

378161009 is a wasteful number, since it uses less digits than its factorization.

378161009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865399.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 378161009 is about 19446.3623590635. The cubic root of 378161009 is about 723.1453246260.

The spelling of 378161009 in words is "three hundred seventy-eight million, one hundred sixty-one thousand, nine".