1021158968 has 16 divisors (see below), whose sum is σ = 1997920080. Its totient is φ = 488380288.

The previous prime is 1021158959. The next prime is 1021158973. The reversal of 1021158968 is 8698511201.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2774705 + ... + 2775072.

It is an arithmetic number, because the mean of its divisors is an integer number (124870005).

Almost surely, 2^1021158968 is an apocalyptic number.

It is an amenable number.

1021158968 is a deficient number, since it is larger than the sum of its proper divisors (976761112).

1021158968 is a wasteful number, since it uses less digits than its factorization.

1021158968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549806 (or 5549802 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 41.

The square root of 1021158968 is about 31955.5780420258. The cubic root of 1021158968 is about 1007.0038212999.

The spelling of 1021158968 in words is "one billion, twenty-one million, one hundred fifty-eight thousand, nine hundred sixty-eight".