378289837 has 2 divisors, whose sum is σ = 378289838. Its totient is φ = 378289836.

The previous prime is 378289823. The next prime is 378289871. The reversal of 378289837 is 738982873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293299876 + 84989961 = 17126^2 + 9219^2 .

It is a cyclic number.

It is not a de Polignac number, because 378289837 - 2¹⁵ = 378257069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378289817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189144918 + 189144919.

It is an arithmetic number, because the mean of its divisors is an integer number (189144919).

Almost surely, 2^378289837 is an apocalyptic number.

It is an amenable number.

378289837 is a deficient number, since it is larger than the sum of its proper divisors (1).

378289837 is an equidigital number, since it uses as much as digits as its factorization.

378289837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The square root of 378289837 is about 19449.6744702836. The cubic root of 378289837 is about 723.2274332046.

The spelling of 378289837 in words is "three hundred seventy-eight million, two hundred eighty-nine thousand, eight hundred thirty-seven".