1021162445 has 8 divisors (see below), whose sum is σ = 1258513944. Its totient is φ = 794850624.

The previous prime is 1021162433. The next prime is 1021162447. The reversal of 1021162445 is 5442611201.

It can be written as a sum of positive squares in 4 ways, for example, as 90973444 + 930189001 = 9538^2 + 30499^2 .

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 1021162445 - 2⁶ = 1021162381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021162447) 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, 2759714 + ... + 2760083.

It is an arithmetic number, because the mean of its divisors is an integer number (157314243).

Almost surely, 2^1021162445 is an apocalyptic number.

It is an amenable number.

1021162445 is a deficient number, since it is larger than the sum of its proper divisors (237351499).

1021162445 is an equidigital number, since it uses as much as digits as its factorization.

1021162445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519839.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1021162445 is about 31955.6324456269. The cubic root of 1021162445 is about 1007.0049642327.

Adding to 1021162445 its reverse (5442611201), we get a palindrome (6463773646).

The spelling of 1021162445 in words is "one billion, twenty-one million, one hundred sixty-two thousand, four hundred forty-five".