1148289909 has 32 divisors (see below), whose sum is σ = 1739512320. Its totient is φ = 667942848.

The previous prime is 1148289851. The next prime is 1148289913. The reversal of 1148289909 is 9099828411.

It is not a de Polignac number, because 1148289909 - 2¹⁹ = 1147765621 is a prime.

It is a super-2 number, since 2×1148289909² = 2637139430222456562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148289929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386062 + ... + 389024.

It is an arithmetic number, because the mean of its divisors is an integer number (54359760).

Almost surely, 2^1148289909 is an apocalyptic number.

1148289909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1148289909 is a deficient number, since it is larger than the sum of its proper divisors (591222411).

1148289909 is a wasteful number, since it uses less digits than its factorization.

1148289909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521.

The product of its (nonzero) digits is 373248, while the sum is 51.

The square root of 1148289909 is about 33886.4266189281. The cubic root of 1148289909 is about 1047.1699783050.

The spelling of 1148289909 in words is "one billion, one hundred forty-eight million, two hundred eighty-nine thousand, nine hundred nine".