1488978289 has 2 divisors, whose sum is σ = 1488978290. Its totient is φ = 1488978288.

The previous prime is 1488978223. The next prime is 1488978311. The reversal of 1488978289 is 9828798841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1484946225 + 4032064 = 38535^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 1488978289 - 2¹¹ = 1488976241 is a prime.

It is a super-2 number, since 2×1488978289² = 4434112690226735042, 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 1488978289.

It is not a weakly prime, because it can be changed into another prime (1488948289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744489144 + 744489145.

It is an arithmetic number, because the mean of its divisors is an integer number (744489145).

Almost surely, 2^1488978289 is an apocalyptic number.

It is an amenable number.

1488978289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1488978289 is an equidigital number, since it uses as much as digits as its factorization.

1488978289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18579456, while the sum is 64.

The square root of 1488978289 is about 38587.2814409100. The cubic root of 1488978289 is about 1141.9036340996.

The spelling of 1488978289 in words is "one billion, four hundred eighty-eight million, nine hundred seventy-eight thousand, two hundred eighty-nine".