2027678489 has 2 divisors, whose sum is σ = 2027678490. Its totient is φ = 2027678488.

The previous prime is 2027678479. The next prime is 2027678507. The reversal of 2027678489 is 9848767202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2006592025 + 21086464 = 44795^2 + 4592^2 .

It is a cyclic number.

It is not a de Polignac number, because 2027678489 - 2¹⁶ = 2027612953 is a prime.

It is a super-2 number, since 2×2027678489² = 8222960109506646242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2027678489.

It is not a weakly prime, because it can be changed into another prime (2027678479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013839244 + 1013839245.

It is an arithmetic number, because the mean of its divisors is an integer number (1013839245).

Almost surely, 2^2027678489 is an apocalyptic number.

It is an amenable number.

2027678489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2027678489 is an equidigital number, since it uses as much as digits as its factorization.

2027678489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 2027678489 is about 45029.7511540981. The cubic root of 2027678489 is about 1265.7065608641.

The spelling of 2027678489 in words is "two billion, twenty-seven million, six hundred seventy-eight thousand, four hundred eighty-nine".