1850212249164 has 144 divisors (see below), whose sum is σ = 4756323499200. Its totient is φ = 606354997248.

The previous prime is 1850212249129. The next prime is 1850212249177. The reversal of 1850212249164 is 4619422120581.

1850212249164 is a `hidden beast` number, since 1 + 8 + 502 + 122 + 4 + 9 + 16 + 4 = 666.

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 47 ways as a sum of consecutive naturals, for example, 557459097 + ... + 557462415.

It is an arithmetic number, because the mean of its divisors is an integer number (33030024300).

Almost surely, 2^{1850212249164} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1850212249164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2378161749600).

1850212249164 is an abundant number, since it is smaller than the sum of its proper divisors (2906111250036).

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

1850212249164 is a wasteful number, since it uses less digits than its factorization.

1850212249164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352 (or 4347 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 1850212249164 in words is "one trillion, eight hundred fifty billion, two hundred twelve million, two hundred forty-nine thousand, one hundred sixty-four".