378359987 has 2 divisors, whose sum is σ = 378359988. Its totient is φ = 378359986.

The previous prime is 378359957. The next prime is 378360049. The reversal of 378359987 is 789953873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378359987 - 2¹⁰ = 378358963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378359957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189179993 + 189179994.

It is an arithmetic number, because the mean of its divisors is an integer number (189179994).

Almost surely, 2^378359987 is an apocalyptic number.

378359987 is a deficient number, since it is larger than the sum of its proper divisors (1).

378359987 is an equidigital number, since it uses as much as digits as its factorization.

378359987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 59.

The square root of 378359987 is about 19451.4777587720. The cubic root of 378359987 is about 723.2721354970.

The spelling of 378359987 in words is "three hundred seventy-eight million, three hundred fifty-nine thousand, nine hundred eighty-seven".