1148449709 has 8 divisors (see below), whose sum is σ = 1253607840. Its totient is φ = 1043417200.

The previous prime is 1148449693. The next prime is 1148449711. The reversal of 1148449709 is 9079448411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1148449709 - 2⁴ = 1148449693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148449769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11747 + ... + 49344.

It is an arithmetic number, because the mean of its divisors is an integer number (156700980).

Almost surely, 2^1148449709 is an apocalyptic number.

It is an amenable number.

1148449709 is a deficient number, since it is larger than the sum of its proper divisors (105158131).

1148449709 is a wasteful number, since it uses less digits than its factorization.

1148449709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62811.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1148449709 is about 33888.7844131359. The cubic root of 1148449709 is about 1047.2185519853.

The spelling of 1148449709 in words is "one billion, one hundred forty-eight million, four hundred forty-nine thousand, seven hundred nine".