1820001102 has 16 divisors (see below), whose sum is σ = 3656040192. Its totient is φ = 603994040.

The previous prime is 1820001091. The next prime is 1820001121. The reversal of 1820001102 is 2011000281.

It is a super-2 number, since 2×1820001102² = 6624808022562428808, which contains 22 as substring.

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, 666774 + ... + 669497.

It is an arithmetic number, because the mean of its divisors is an integer number (228502512).

Almost surely, 2^1820001102 is an apocalyptic number.

1820001102 is an abundant number, since it is smaller than the sum of its proper divisors (1836039090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1820001102 is a wasteful number, since it uses less digits than its factorization.

1820001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336503.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1820001102 is about 42661.4709310403. The cubic root of 1820001102 is about 1220.9293961687.

Adding to 1820001102 its reverse (2011000281), we get a palindrome (3831001383).

The spelling of 1820001102 in words is "one billion, eight hundred twenty million, one thousand, one hundred two".