1990083546240 has 128 divisors (see below), whose sum is σ = 6562129118400. Its totient is φ = 512389312512.

The previous prime is 1990083546233. The next prime is 1990083546259. The reversal of 1990083546240 is 426453800991.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17815042 + ... + 17926401.

Almost surely, 2^{1990083546240} is an apocalyptic number.

1990083546240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1990083546240 is an abundant number, since it is smaller than the sum of its proper divisors (4572045572160).

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

1990083546240 is a wasteful number, since it uses less digits than its factorization.

1990083546240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35741494 (or 35741482 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 1990083546240 in words is "one trillion, nine hundred ninety billion, eighty-three million, five hundred forty-six thousand, two hundred forty".