1148955879 has 4 divisors (see below), whose sum is σ = 1531941176. Its totient is φ = 765970584.

The previous prime is 1148955877. The next prime is 1148955881. The reversal of 1148955879 is 9785598411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9785598411 = 3 ⋅3261866137.

It is an interprime number because it is at equal distance from previous prime (1148955877) and next prime (1148955881).

It is not a de Polignac number, because 1148955879 - 2¹ = 1148955877 is a prime.

It is a super-2 number, since 2×1148955879² = 2640199223777325282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148955877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191492644 + ... + 191492649.

It is an arithmetic number, because the mean of its divisors is an integer number (382985294).

Almost surely, 2^1148955879 is an apocalyptic number.

1148955879 is a deficient number, since it is larger than the sum of its proper divisors (382985297).

1148955879 is an equidigital number, since it uses as much as digits as its factorization.

1148955879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382985296.

The product of its digits is 3628800, while the sum is 57.

The square root of 1148955879 is about 33896.2516954309. The cubic root of 1148955879 is about 1047.3723804477.

The spelling of 1148955879 in words is "one billion, one hundred forty-eight million, nine hundred fifty-five thousand, eight hundred seventy-nine".