1148825979889 has 27 divisors (see below), whose sum is σ = 1419782362443. Its totient is φ = 926681087808.

The previous prime is 1148825979877. The next prime is 1148825979913. The reversal of 1148825979889 is 9889795288411.

The square root of 1148825979889 is 1071833.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 894414690225 + 254411289664 = 945735^2 + 504392^2 .

It is not a de Polignac number, because 1148825979889 - 2⁹ = 1148825979377 is a prime.

It is a super-2 number, since 2×1148825979889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148825979089) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 127543624 + ... + 127552630.

Almost surely, 2^{1148825979889} is an apocalyptic number.

1148825979889 is the 1071833-rd square number.

1148825979889 is the 535917-th centered octagonal number.

It is an amenable number.

1148825979889 is a deficient number, since it is larger than the sum of its proper divisors (270956382554).

1148825979889 is an frugal number, since it uses more digits than its factorization.

1148825979889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18062 (or 9031 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 79.

The spelling of 1148825979889 in words is "one trillion, one hundred forty-eight billion, eight hundred twenty-five million, nine hundred seventy-nine thousand, eight hundred eighty-nine".