993737481 has 16 divisors (see below), whose sum is σ = 1458233280. Its totient is φ = 596933120.

The previous prime is 993737443. The next prime is 993737543. The reversal of 993737481 is 184737399.

It is a cyclic number.

It is not a de Polignac number, because 993737481 - 2⁶ = 993737417 is a prime.

It is a super-2 number, since 2×993737481² = 1975028362288450722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (993737441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129516 + ... + 136973.

It is an arithmetic number, because the mean of its divisors is an integer number (91139580).

Almost surely, 2^993737481 is an apocalyptic number.

It is an amenable number.

993737481 is a deficient number, since it is larger than the sum of its proper divisors (464495799).

993737481 is a wasteful number, since it uses less digits than its factorization.

993737481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266616.

The product of its digits is 1143072, while the sum is 51.

The square root of 993737481 is about 31523.6019674148. The cubic root of 993737481 is about 997.9081207592.

The spelling of 993737481 in words is "nine hundred ninety-three million, seven hundred thirty-seven thousand, four hundred eighty-one".