993034138 has 4 divisors (see below), whose sum is σ = 1489551210. Its totient is φ = 496517068.

The previous prime is 993034123. The next prime is 993034201. The reversal of 993034138 is 831430399.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 887622849 + 105411289 = 29793^2 + 10267^2 .

It is a super-2 number, since 2×993034138² = 1972233598466806088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 993034138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248258533 + ... + 248258536.

Almost surely, 2^993034138 is an apocalyptic number.

993034138 is a deficient number, since it is larger than the sum of its proper divisors (496517072).

993034138 is a wasteful number, since it uses less digits than its factorization.

993034138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496517071.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 993034138 is about 31512.4441768645. Note that the first 3 decimals coincide. The cubic root of 993034138 is about 997.6726335677.

The spelling of 993034138 in words is "nine hundred ninety-three million, thirty-four thousand, one hundred thirty-eight".