1851448492436 has 12 divisors (see below), whose sum is σ = 3240045445140. Its totient is φ = 925721222400.

The previous prime is 1851448492417. The next prime is 1851448492447. The reversal of 1851448492436 is 6342948441581.

It can be written as a sum of positive squares in 2 ways, for example, as 638410588036 + 1213037904400 = 799006^2 + 1101380^2 .

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 3 ways as a sum of consecutive naturals, for example, 1162850 + ... + 2248358.

It is an arithmetic number, because the mean of its divisors is an integer number (270003787095).

Almost surely, 2^{1851448492436} is an apocalyptic number.

It is an amenable number.

1851448492436 is a deficient number, since it is larger than the sum of its proper divisors (1388596952704).

1851448492436 is a wasteful number, since it uses less digits than its factorization.

1851448492436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511914 (or 1511912 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 59.

The spelling of 1851448492436 in words is "one trillion, eight hundred fifty-one billion, four hundred forty-eight million, four hundred ninety-two thousand, four hundred thirty-six".