1022140858 has 4 divisors (see below), whose sum is σ = 1533211290. Its totient is φ = 511070428.

The previous prime is 1022140849. The next prime is 1022140859. The reversal of 1022140858 is 8580412201.

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

It can be written as a sum of positive squares in only one way, i.e., 831341889 + 190798969 = 28833^2 + 13813^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1022140859) 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 as a sum of consecutive naturals, namely, 255535213 + ... + 255535216.

Almost surely, 2^1022140858 is an apocalyptic number.

1022140858 is a deficient number, since it is larger than the sum of its proper divisors (511070432).

1022140858 is an equidigital number, since it uses as much as digits as its factorization.

1022140858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511070431.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 1022140858 is about 31970.9377091133. The cubic root of 1022140858 is about 1007.3264776370.

The spelling of 1022140858 in words is "one billion, twenty-two million, one hundred forty thousand, eight hundred fifty-eight".