1993530972 has 24 divisors (see below), whose sum is σ = 4653532800. Its totient is φ = 664230256.

The previous prime is 1993530967. The next prime is 1993530989. The reversal of 1993530972 is 2790353991.

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 7 ways as a sum of consecutive naturals, for example, 4272 + ... + 63287.

It is an arithmetic number, because the mean of its divisors is an integer number (193897200).

Almost surely, 2^1993530972 is an apocalyptic number.

1993530972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1993530972 is an abundant number, since it is smaller than the sum of its proper divisors (2660001828).

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

1993530972 is a wasteful number, since it uses less digits than its factorization.

1993530972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70025 (or 70023 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 1993530972 is about 44648.9750386277. The cubic root of 1993530972 is about 1258.5611718996.

The spelling of 1993530972 in words is "one billion, nine hundred ninety-three million, five hundred thirty thousand, nine hundred seventy-two".