1851514164 has 72 divisors (see below), whose sum is σ = 4923828000. Its totient is φ = 585770304.

The previous prime is 1851514157. The next prime is 1851514177. The reversal of 1851514164 is 4614151581.

1851514164 is a `hidden beast` number, since 1 + 85 + 1 + 514 + 1 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46567 + ... + 76625.

It is an arithmetic number, because the mean of its divisors is an integer number (68386500).

Almost surely, 2^1851514164 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 1851514164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2461914000).

1851514164 is an abundant number, since it is smaller than the sum of its proper divisors (3072313836).

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

1851514164 is a wasteful number, since it uses less digits than its factorization.

1851514164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30157 (or 30152 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 1851514164 is about 43029.2245340304. The cubic root of 1851514164 is about 1227.9358518483.

The spelling of 1851514164 in words is "one billion, eight hundred fifty-one million, five hundred fourteen thousand, one hundred sixty-four".