378262515989 has 2 divisors, whose sum is σ = 378262515990. Its totient is φ = 378262515988.

The previous prime is 378262515923. The next prime is 378262516001. The reversal of 378262515989 is 989515262873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264165160900 + 114097355089 = 513970^2 + 337783^2 .

It is a cyclic number.

It is not a de Polignac number, because 378262515989 - 2²⁸ = 377994080533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378262512989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189131257994 + 189131257995.

It is an arithmetic number, because the mean of its divisors is an integer number (189131257995).

Almost surely, 2^378262515989 is an apocalyptic number.

It is an amenable number.

378262515989 is a deficient number, since it is larger than the sum of its proper divisors (1).

378262515989 is an equidigital number, since it uses as much as digits as its factorization.

378262515989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65318400, while the sum is 65.

The spelling of 378262515989 in words is "three hundred seventy-eight billion, two hundred sixty-two million, five hundred fifteen thousand, nine hundred eighty-nine".