938353645 has 4 divisors (see below), whose sum is σ = 1126024380. Its totient is φ = 750682912.

The previous prime is 938353643. The next prime is 938353649. The reversal of 938353645 is 546353839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546353839 = 53 ⋅10308563.

It can be written as a sum of positive squares in 2 ways, for example, as 559700964 + 378652681 = 23658^2 + 19459^2 .

It is a cyclic number.

It is not a de Polignac number, because 938353645 - 2¹ = 938353643 is a prime.

It is a super-3 number, since 3×938353645³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 938353595 and 938353604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938353643) 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, 93835360 + ... + 93835369.

It is an arithmetic number, because the mean of its divisors is an integer number (281506095).

Almost surely, 2^938353645 is an apocalyptic number.

It is an amenable number.

938353645 is a deficient number, since it is larger than the sum of its proper divisors (187670735).

938353645 is a wasteful number, since it uses less digits than its factorization.

938353645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187670734.

The product of its digits is 1166400, while the sum is 46.

The square root of 938353645 is about 30632.5585774352. The cubic root of 938353645 is about 979.0138785918.

The spelling of 938353645 in words is "nine hundred thirty-eight million, three hundred fifty-three thousand, six hundred forty-five".