1148520791 has 4 divisors (see below), whose sum is σ = 1252931784. Its totient is φ = 1044109800.

The previous prime is 1148520781. The next prime is 1148520827. The reversal of 1148520791 is 1970258411.

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

It is a cyclic number.

It is not a de Polignac number, because 1148520791 - 2¹⁰ = 1148519767 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 (1148520701) 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, 52205480 + ... + 52205501.

It is an arithmetic number, because the mean of its divisors is an integer number (313232946).

Almost surely, 2^1148520791 is an apocalyptic number.

1148520791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1148520791 is a deficient number, since it is larger than the sum of its proper divisors (104410993).

1148520791 is a wasteful number, since it uses less digits than its factorization.

1148520791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104410992.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1148520791 is about 33889.8331509614. The cubic root of 1148520791 is about 1047.2401570101.

The spelling of 1148520791 in words is "one billion, one hundred forty-eight million, five hundred twenty thousand, seven hundred ninety-one".