1165248638 has 8 divisors (see below), whose sum is σ = 1755506280. Its totient is φ = 580079880.

The previous prime is 1165248569. The next prime is 1165248641. The reversal of 1165248638 is 8368425611.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271648 + ... + 1272563.

It is an arithmetic number, because the mean of its divisors is an integer number (219438285).

Almost surely, 2^1165248638 is an apocalyptic number.

1165248638 is a deficient number, since it is larger than the sum of its proper divisors (590257642).

1165248638 is a wasteful number, since it uses less digits than its factorization.

1165248638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544442.

The product of its digits is 276480, while the sum is 44.

The square root of 1165248638 is about 34135.7384276362. The cubic root of 1165248638 is about 1052.2999134056.

The spelling of 1165248638 in words is "one billion, one hundred sixty-five million, two hundred forty-eight thousand, six hundred thirty-eight".