1999481123048 has 8 divisors (see below), whose sum is σ = 3749027105730. Its totient is φ = 999740561520.

The previous prime is 1999481123027. The next prime is 1999481123053. The reversal of 1999481123048 is 8403211849991.

It can be written as a sum of positive squares in only one way, i.e., 1690525240804 + 308955882244 = 1300202^2 + 555838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1999481123048² (a number of 25 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 124967570183 + ... + 124967570198.

Almost surely, 2^{1999481123048} is an apocalyptic number.

It is an amenable number.

1999481123048 is a deficient number, since it is larger than the sum of its proper divisors (1749545982682).

1999481123048 is a wasteful number, since it uses less digits than its factorization.

1999481123048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249935140387 (or 249935140383 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 59.

The spelling of 1999481123048 in words is "one trillion, nine hundred ninety-nine billion, four hundred eighty-one million, one hundred twenty-three thousand, forty-eight".