1820018191002 has 64 divisors (see below), whose sum is σ = 3986102016000. Its totient is φ = 549418354880.

The previous prime is 1820018190983. The next prime is 1820018191093. The reversal of 1820018191002 is 2001918100281.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32589499 + ... + 32645297.

It is an arithmetic number, because the mean of its divisors is an integer number (62282844000).

Almost surely, 2^{1820018191002} is an apocalyptic number.

1820018191002 is an abundant number, since it is smaller than the sum of its proper divisors (2166083824998).

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

1820018191002 is a wasteful number, since it uses less digits than its factorization.

1820018191002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57691.

The product of its (nonzero) digits is 2304, while the sum is 33.

The spelling of 1820018191002 in words is "one trillion, eight hundred twenty billion, eighteen million, one hundred ninety-one thousand, two".