993333137 has 4 divisors (see below), whose sum is σ = 1051764516. Its totient is φ = 934901760.

The previous prime is 993333083. The next prime is 993333149. The reversal of 993333137 is 731333399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 731333399 = 7523 ⋅97213.

It can be written as a sum of positive squares in 2 ways, for example, as 933363601 + 59969536 = 30551^2 + 7744^2 .

It is a cyclic number.

It is not a de Polignac number, because 993333137 - 2¹⁶ = 993267601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993333094 and 993333103.

It is not an unprimeable number, because it can be changed into a prime (993333157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29215664 + ... + 29215697.

It is an arithmetic number, because the mean of its divisors is an integer number (262941129).

Almost surely, 2^993333137 is an apocalyptic number.

It is an amenable number.

993333137 is a deficient number, since it is larger than the sum of its proper divisors (58431379).

993333137 is a wasteful number, since it uses less digits than its factorization.

993333137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58431378.

The product of its digits is 137781, while the sum is 41.

The square root of 993333137 is about 31517.1879614917. The cubic root of 993333137 is about 997.7727553977.

The spelling of 993333137 in words is "nine hundred ninety-three million, three hundred thirty-three thousand, one hundred thirty-seven".