1021022993 has 8 divisors (see below), whose sum is σ = 1025660160. Its totient is φ = 1016396640.

The previous prime is 1021022963. The next prime is 1021022999. The reversal of 1021022993 is 3992201201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021022993 - 2⁶ = 1021022929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021022999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229373 + ... + 233781.

It is an arithmetic number, because the mean of its divisors is an integer number (128207520).

Almost surely, 2^1021022993 is an apocalyptic number.

It is an amenable number.

1021022993 is a deficient number, since it is larger than the sum of its proper divisors (4637167).

1021022993 is an equidigital number, since it uses as much as digits as its factorization.

1021022993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1021022993 is about 31953.4504083675. The cubic root of 1021022993 is about 1006.9591226039.

The spelling of 1021022993 in words is "one billion, twenty-one million, twenty-two thousand, nine hundred ninety-three".