1148168021 has 16 divisors (see below), whose sum is σ = 1541597568. Its totient is φ = 825854400.

The previous prime is 1148168009. The next prime is 1148168023. The reversal of 1148168021 is 1208618411.

It is a happy number.

It is not a de Polignac number, because 1148168021 - 2²⁶ = 1081059157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148168023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572510 + ... + 574511.

It is an arithmetic number, because the mean of its divisors is an integer number (96349848).

Almost surely, 2^1148168021 is an apocalyptic number.

1148168021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1148168021 is a deficient number, since it is larger than the sum of its proper divisors (393429547).

1148168021 is a wasteful number, since it uses less digits than its factorization.

1148168021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147052.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 1148168021 is about 33884.6280929864. The cubic root of 1148168021 is about 1047.1329255336.

The spelling of 1148168021 in words is "one billion, one hundred forty-eight million, one hundred sixty-eight thousand, twenty-one".