1875644945856 has 112 divisors (see below), whose sum is σ = 6015326023680. Its totient is φ = 568377250560.

The previous prime is 1875644945849. The next prime is 1875644945903. The reversal of 1875644945856 is 6585494465781.

1875644945856 is a `hidden beast` number, since 1 + 8 + 7 + 56 + 4 + 494 + 5 + 85 + 6 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 15 ways as a sum of consecutive naturals, for example, 49319296 + ... + 49357311.

Almost surely, 2^{1875644945856} is an apocalyptic number.

1875644945856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1875644945856 is an abundant number, since it is smaller than the sum of its proper divisors (4139681077824).

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

1875644945856 is a wasteful number, since it uses less digits than its factorization.

1875644945856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98676639 (or 98676623 counting only the distinct ones).

The product of its digits is 1161216000, while the sum is 72.

It can be divided in two parts, 1875644 and 945856, that added together give a triangular number (2821500 = T₂₃₇₅).

The spelling of 1875644945856 in words is "one trillion, eight hundred seventy-five billion, six hundred forty-four million, nine hundred forty-five thousand, eight hundred fifty-six".