1993607040 has 64 divisors (see below), whose sum is σ = 6354628560. Its totient is φ = 531628032.

The previous prime is 1993607039. The next prime is 1993607069. The reversal of 1993607040 is 407063991.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1993607040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517249 + ... + 521088.

Almost surely, 2^1993607040 is an apocalyptic number.

1993607040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993607040 is an abundant number, since it is smaller than the sum of its proper divisors (4361021520).

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

1993607040 is a wasteful number, since it uses less digits than its factorization.

1993607040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038359 (or 1038347 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 1993607040 is about 44649.8268753643. The cubic root of 1993607040 is about 1258.5771795120.

The spelling of 1993607040 in words is "one billion, nine hundred ninety-three million, six hundred seven thousand, forty".