1850397855264 has 108 divisors (see below), whose sum is σ = 6121182237534. Its totient is φ = 528685097472.

The previous prime is 1850397855247. The next prime is 1850397855269. The reversal of 1850397855264 is 4625587930581.

1850397855264 is a `hidden beast` number, since 1 + 8 + 5 + 0 + 3 + 9 + 78 + 552 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1848805845264 + 1592010000 = 1359708^2 + 39900^2 .

It is a super-2 number, since 2×1850397855264² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1850397855269) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 65547037 + ... + 65575260.

It is a 1-persistent number, because it is pandigital, but 2⋅1850397855264 = 3700795710528 is not.

Almost surely, 2^{1850397855264} is an apocalyptic number.

1850397855264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1850397855264 is an abundant number, since it is smaller than the sum of its proper divisors (4270784382270).

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

1850397855264 is a wasteful number, since it uses less digits than its factorization.

1850397855264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131122327 (or 131122309 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 63.

The spelling of 1850397855264 in words is "one trillion, eight hundred fifty billion, three hundred ninety-seven million, eight hundred fifty-five thousand, two hundred sixty-four".