1819111091002 has 32 divisors (see below), whose sum is σ = 2815203378240. Its totient is φ = 881279118720.

The previous prime is 1819111090997. The next prime is 1819111091093. The reversal of 1819111091002 is 2001901119181.

It is a happy number.

It is a super-2 number, since 2×1819111091002² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1546477 + ... + 2455567.

It is an arithmetic number, because the mean of its divisors is an integer number (87975105570).

Almost surely, 2^{1819111091002} is an apocalyptic number.

1819111091002 is a deficient number, since it is larger than the sum of its proper divisors (996092287238).

1819111091002 is a wasteful number, since it uses less digits than its factorization.

1819111091002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909406.

The product of its (nonzero) digits is 1296, while the sum is 34.

The spelling of 1819111091002 in words is "one trillion, eight hundred nineteen billion, one hundred eleven million, ninety-one thousand, two".