1820113126 has 16 divisors (see below), whose sum is σ = 3113135424. Its totient is φ = 790637184.

The previous prime is 1820113093. The next prime is 1820113133. The reversal of 1820113126 is 6213110281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820113126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058510 + ... + 2059393.

It is an arithmetic number, because the mean of its divisors is an integer number (194570964).

Almost surely, 2^1820113126 is an apocalyptic number.

1820113126 is a deficient number, since it is larger than the sum of its proper divisors (1293022298).

1820113126 is a wasteful number, since it uses less digits than its factorization.

1820113126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117935.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1820113126 is about 42662.7838519710. The cubic root of 1820113126 is about 1220.9544457119.

The spelling of 1820113126 in words is "one billion, eight hundred twenty million, one hundred thirteen thousand, one hundred twenty-six".