1864488863 has 2 divisors, whose sum is σ = 1864488864. Its totient is φ = 1864488862.

The previous prime is 1864488841. The next prime is 1864488869. The reversal of 1864488863 is 3688844681.

It is a strong prime.

It is an emirp because it is prime and its reverse (3688844681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1864488863 - 2¹⁴ = 1864472479 is a prime.

It is a super-4 number, since 4×1864488863⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1864488799 and 1864488808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1864488869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932244431 + 932244432.

It is an arithmetic number, because the mean of its divisors is an integer number (932244432).

Almost surely, 2^1864488863 is an apocalyptic number.

1864488863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864488863 is an equidigital number, since it uses as much as digits as its factorization.

1864488863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7077888, while the sum is 56.

The square root of 1864488863 is about 43179.7274539801. The cubic root of 1864488863 is about 1230.7974785194.

The spelling of 1864488863 in words is "one billion, eight hundred sixty-four million, four hundred eighty-eight thousand, eight hundred sixty-three".