1857049740020 has 48 divisors (see below), whose sum is σ = 3981193085520. Its totient is φ = 727372379136.

The previous prime is 1857049739957. The next prime is 1857049740071. The reversal of 1857049740020 is 200479407581.

It can be written as a sum of positive squares in 8 ways, for example, as 120253156 + 1856929486864 = 10966^2 + 1362692^2 .

It is a congruent number.

It is an unprimeable number.

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, 1181417 + ... + 2260496.

It is an arithmetic number, because the mean of its divisors is an integer number (82941522615).

Almost surely, 2^{1857049740020} is an apocalyptic number.

1857049740020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1857049740020 is an abundant number, since it is smaller than the sum of its proper divisors (2124143345500).

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

1857049740020 is a wasteful number, since it uses less digits than its factorization.

1857049740020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442484 (or 3442482 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 1857049740020 in words is "one trillion, eight hundred fifty-seven billion, forty-nine million, seven hundred forty thousand, twenty".