188026081 has 4 divisors (see below), whose sum is σ = 196201152. Its totient is φ = 179851012.

The previous prime is 188026073. The next prime is 188026087. The reversal of 188026081 is 180620881.

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, and also an emirpimes, since its reverse is a distinct semiprime: 180620881 = 7 ⋅25802983.

It is a cyclic number.

It is not a de Polignac number, because 188026081 - 2³ = 188026073 is a prime.

It is a super-2 number, since 2×188026081² = 70707614272437122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188026087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4087501 + ... + 4087546.

It is an arithmetic number, because the mean of its divisors is an integer number (49050288).

Almost surely, 2^188026081 is an apocalyptic number.

It is an amenable number.

188026081 is a deficient number, since it is larger than the sum of its proper divisors (8175071).

188026081 is an equidigital number, since it uses as much as digits as its factorization.

188026081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175070.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 188026081 is about 13712.2602440298. The cubic root of 188026081 is about 572.8919213367.

The spelling of 188026081 in words is "one hundred eighty-eight million, twenty-six thousand, eighty-one".