1990110001 has 16 divisors (see below), whose sum is σ = 2184735168. Its totient is φ = 1797811200.

The previous prime is 1990109993. The next prime is 1990110037. The reversal of 1990110001 is 1000110991.

It is a cyclic number.

It is not a de Polignac number, because 1990110001 - 2³ = 1990109993 is a prime.

It is a super-3 number, since 3×1990110001³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1990110301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461561 + ... + 1462921.

It is an arithmetic number, because the mean of its divisors is an integer number (136545948).

Almost surely, 2^1990110001 is an apocalyptic number.

1990110001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1990110001 is a deficient number, since it is larger than the sum of its proper divisors (194625167).

1990110001 is a wasteful number, since it uses less digits than its factorization.

1990110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 81, while the sum is 22.

The square root of 1990110001 is about 44610.6489641207. The cubic root of 1990110001 is about 1257.8408475972.

Adding to 1990110001 its reverse (1000110991), we get a palindrome (2990220992).

The spelling of 1990110001 in words is "one billion, nine hundred ninety million, one hundred ten thousand, one".