1026705081 has 4 divisors (see below), whose sum is σ = 1368940112. Its totient is φ = 684470052.

The previous prime is 1026705077. The next prime is 1026705131. The reversal of 1026705081 is 1805076201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1026705081 - 2² = 1026705077 is a prime.

It is a super-4 number, since 4×1026705081⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026705011) 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, 171117511 + ... + 171117516.

It is an arithmetic number, because the mean of its divisors is an integer number (342235028).

Almost surely, 2^1026705081 is an apocalyptic number.

It is an amenable number.

1026705081 is a deficient number, since it is larger than the sum of its proper divisors (342235031).

1026705081 is an equidigital number, since it uses as much as digits as its factorization.

1026705081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342235030.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1026705081 is about 32042.2390135271. The cubic root of 1026705081 is about 1008.8236086073.

The spelling of 1026705081 in words is "one billion, twenty-six million, seven hundred five thousand, eighty-one".