2864438387 has 2 divisors, whose sum is σ = 2864438388. Its totient is φ = 2864438386.

The previous prime is 2864438281. The next prime is 2864438399. The reversal of 2864438387 is 7838344682.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2864438387 - 2¹⁰ = 2864437363 is a prime.

It is not a weakly prime, because it can be changed into another prime (2864438587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432219193 + 1432219194.

It is an arithmetic number, because the mean of its divisors is an integer number (1432219194).

Almost surely, 2^2864438387 is an apocalyptic number.

2864438387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2864438387 is an equidigital number, since it uses as much as digits as its factorization.

2864438387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 53.

The square root of 2864438387 is about 53520.4483071657. The cubic root of 2864438387 is about 1420.1901462954.

The spelling of 2864438387 in words is "two billion, eight hundred sixty-four million, four hundred thirty-eight thousand, three hundred eighty-seven".