1148390309 has 12 divisors (see below), whose sum is σ = 1263202080. Its totient is φ = 1043229000.

The previous prime is 1148390297. The next prime is 1148390311. The reversal of 1148390309 is 9030938411.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1148390309 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148390359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224834 + ... + 229884.

It is an arithmetic number, because the mean of its divisors is an integer number (105266840).

Almost surely, 2^1148390309 is an apocalyptic number.

It is an amenable number.

1148390309 is a deficient number, since it is larger than the sum of its proper divisors (114811771).

1148390309 is a wasteful number, since it uses less digits than its factorization.

1148390309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952 (or 6941 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1148390309 is about 33887.9080056589. The cubic root of 1148390309 is about 1047.2004969633.

The spelling of 1148390309 in words is "one billion, one hundred forty-eight million, three hundred ninety thousand, three hundred nine".