1990894058040 has 32 divisors (see below), whose sum is σ = 5972682174480. Its totient is φ = 530905082112.

The previous prime is 1990894057993. The next prime is 1990894058063. The reversal of 1990894058040 is 408504980991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8295391789 + ... + 8295392028.

Almost surely, 2^{1990894058040} is an apocalyptic number.

1990894058040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1990894058040 is an abundant number, since it is smaller than the sum of its proper divisors (3981788116440).

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

1990894058040 is a wasteful number, since it uses less digits than its factorization.

1990894058040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16590783831 (or 16590783827 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 1990894058040 in words is "one trillion, nine hundred ninety billion, eight hundred ninety-four million, fifty-eight thousand, forty".