1148739965 has 4 divisors (see below), whose sum is σ = 1378487964. Its totient is φ = 918991968.

The previous prime is 1148739961. The next prime is 1148739973. The reversal of 1148739965 is 5699378411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386869561 + 761870404 = 19669^2 + 27602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148739965 - 2² = 1148739961 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 (1148739961) 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, 114873992 + ... + 114874001.

It is an arithmetic number, because the mean of its divisors is an integer number (344621991).

Almost surely, 2^1148739965 is an apocalyptic number.

It is an amenable number.

1148739965 is a deficient number, since it is larger than the sum of its proper divisors (229747999).

1148739965 is an equidigital number, since it uses as much as digits as its factorization.

1148739965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229747998.

The product of its digits is 1632960, while the sum is 53.

The square root of 1148739965 is about 33893.0666213608. The cubic root of 1148739965 is about 1047.3067682598.

The spelling of 1148739965 in words is "one billion, one hundred forty-eight million, seven hundred thirty-nine thousand, nine hundred sixty-five".