1820835352266 has 32 divisors (see below), whose sum is σ = 4406727576960. Its totient is φ = 489636397056.

The previous prime is 1820835352247. The next prime is 1820835352337. The reversal of 1820835352266 is 6622535380281.

It is a super-2 number, since 2×1820835352266² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275094071 + ... + 1275095498.

It is an arithmetic number, because the mean of its divisors is an integer number (137710236780).

Almost surely, 2^{1820835352266} is an apocalyptic number.

1820835352266 is an abundant number, since it is smaller than the sum of its proper divisors (2585892224694).

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

1820835352266 is a wasteful number, since it uses less digits than its factorization.

1820835352266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550189598.

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 1820835352266 in words is "one trillion, eight hundred twenty billion, eight hundred thirty-five million, three hundred fifty-two thousand, two hundred sixty-six".