1148491093 has 4 divisors (see below), whose sum is σ = 1149139180. Its totient is φ = 1147843008.

The previous prime is 1148491087. The next prime is 1148491133. The reversal of 1148491093 is 3901948411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3901948411 = 34159 ⋅114229.

It can be written as a sum of positive squares in 2 ways, for example, as 448465329 + 700025764 = 21177^2 + 26458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148491093 - 2¹³ = 1148482901 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 (1148491033) 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, 321378 + ... + 324931.

It is an arithmetic number, because the mean of its divisors is an integer number (287284795).

Almost surely, 2^1148491093 is an apocalyptic number.

It is an amenable number.

1148491093 is a deficient number, since it is larger than the sum of its proper divisors (648087).

1148491093 is an equidigital number, since it uses as much as digits as its factorization.

1148491093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648086.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1148491093 is about 33889.3949931243. The cubic root of 1148491093 is about 1047.2311305573.

The spelling of 1148491093 in words is "one billion, one hundred forty-eight million, four hundred ninety-one thousand, ninety-three".