1800087026 has 4 divisors (see below), whose sum is σ = 2700130542. Its totient is φ = 900043512.

The previous prime is 1800087017. The next prime is 1800087049. The reversal of 1800087026 is 6207800081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6207800081 = 7 ⋅886828583.

It can be written as a sum of positive squares in only one way, i.e., 1668640801 + 131446225 = 40849^2 + 11465^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1800086983 and 1800087001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450021755 + ... + 450021758.

Almost surely, 2^1800087026 is an apocalyptic number.

1800087026 is a deficient number, since it is larger than the sum of its proper divisors (900043516).

1800087026 is an equidigital number, since it uses as much as digits as its factorization.

1800087026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900043515.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1800087026 is about 42427.4324700423. The cubic root of 1800087026 is about 1216.4600028621.

The spelling of 1800087026 in words is "one billion, eight hundred million, eighty-seven thousand, twenty-six".