1851973064 has 64 divisors (see below), whose sum is σ = 3909306240. Its totient is φ = 817822720.

The previous prime is 1851973061. The next prime is 1851973127. The reversal of 1851973064 is 4603791581.

It is not an unprimeable number, because it can be changed into a prime (1851973061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160199 + ... + 171369.

It is an arithmetic number, because the mean of its divisors is an integer number (61082910).

Almost surely, 2^1851973064 is an apocalyptic number.

It is an amenable number.

1851973064 is an abundant number, since it is smaller than the sum of its proper divisors (2057333176).

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

1851973064 is a wasteful number, since it uses less digits than its factorization.

1851973064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11270 (or 11266 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1851973064 is about 43034.5566260418. The cubic root of 1851973064 is about 1228.0372919246.

The spelling of 1851973064 in words is "one billion, eight hundred fifty-one million, nine hundred seventy-three thousand, sixty-four".