1022020158 has 8 divisors (see below), whose sum is σ = 2044040328. Its totient is φ = 340673384.

The previous prime is 1022020151. The next prime is 1022020159. The reversal of 1022020158 is 8510202201.

It is a happy number.

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

1022020158 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022020151) 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, 85168341 + ... + 85168352.

It is an arithmetic number, because the mean of its divisors is an integer number (255505041).

Almost surely, 2^1022020158 is an apocalyptic number.

1022020158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022020158 is a wasteful number, since it uses less digits than its factorization.

1022020158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170336698.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1022020158 is about 31969.0500015249. The cubic root of 1022020158 is about 1007.2868258639.

Adding to 1022020158 its reverse (8510202201), we get a palindrome (9532222359).

The spelling of 1022020158 in words is "one billion, twenty-two million, twenty thousand, one hundred fifty-eight".