1011002173 has 2 divisors, whose sum is σ = 1011002174. Its totient is φ = 1011002172.

The previous prime is 1011002131. The next prime is 1011002243. The reversal of 1011002173 is 3712001101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854802169 + 156200004 = 29237^2 + 12498^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011002173 - 2¹⁷ = 1010871101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011002123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505501086 + 505501087.

It is an arithmetic number, because the mean of its divisors is an integer number (505501087).

Almost surely, 2^1011002173 is an apocalyptic number.

It is an amenable number.

1011002173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011002173 is an equidigital number, since it uses as much as digits as its factorization.

1011002173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 1011002173 is about 31796.2603618727. The cubic root of 1011002173 is about 1003.6540228543.

Adding to 1011002173 its reverse (3712001101), we get a palindrome (4723003274).

The spelling of 1011002173 in words is "one billion, eleven million, two thousand, one hundred seventy-three".