378710987 has 2 divisors, whose sum is σ = 378710988. Its totient is φ = 378710986.

The previous prime is 378710963. The next prime is 378711043. The reversal of 378710987 is 789017873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378710987 - 2¹⁸ = 378448843 is a prime.

It is not a weakly prime, because it can be changed into another prime (378712987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189355493 + 189355494.

It is an arithmetic number, because the mean of its divisors is an integer number (189355494).

Almost surely, 2^378710987 is an apocalyptic number.

378710987 is a deficient number, since it is larger than the sum of its proper divisors (1).

378710987 is an equidigital number, since it uses as much as digits as its factorization.

378710987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 50.

The square root of 378710987 is about 19460.4981179825. The cubic root of 378710987 is about 723.4957233191.

The spelling of 378710987 in words is "three hundred seventy-eight million, seven hundred ten thousand, nine hundred eighty-seven".