202693139 has 8 divisors (see below), whose sum is σ = 223605360. Its totient is φ = 182195200.

The previous prime is 202693133. The next prime is 202693207. The reversal of 202693139 is 931396202.

202693139 = 330² + 331² + ... + 863².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202693139 - 2⁸ = 202692883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202693099 and 202693108.

It is not an unprimeable number, because it can be changed into a prime (202693133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102542 + ... + 104499.

It is an arithmetic number, because the mean of its divisors is an integer number (27950670).

Almost surely, 2^202693139 is an apocalyptic number.

202693139 is a deficient number, since it is larger than the sum of its proper divisors (20912221).

202693139 is a wasteful number, since it uses less digits than its factorization.

202693139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207141.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 202693139 is about 14237.0340661249. The cubic root of 202693139 is about 587.4167815733.

The spelling of 202693139 in words is "two hundred two million, six hundred ninety-three thousand, one hundred thirty-nine".