378693901 has 4 divisors (see below), whose sum is σ = 378862204. Its totient is φ = 378525600.

The previous prime is 378693881. The next prime is 378693929. The reversal of 378693901 is 109396873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121572676 + 257121225 = 11026^2 + 16035^2 .

It is a cyclic number.

It is not a de Polignac number, because 378693901 - 2⁷ = 378693773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378693941) 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 3 ways as a sum of consecutive naturals, for example, 80730 + ... + 85291.

It is an arithmetic number, because the mean of its divisors is an integer number (94715551).

Almost surely, 2^378693901 is an apocalyptic number.

It is an amenable number.

378693901 is a deficient number, since it is larger than the sum of its proper divisors (168303).

378693901 is a wasteful number, since it uses less digits than its factorization.

378693901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168302.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 378693901 is about 19460.0591211846. The cubic root of 378693901 is about 723.4848426966.

The spelling of 378693901 in words is "three hundred seventy-eight million, six hundred ninety-three thousand, nine hundred one".