938354657 has 4 divisors (see below), whose sum is σ = 938485680. Its totient is φ = 938223636.

The previous prime is 938354633. The next prime is 938354687. The reversal of 938354657 is 756453839.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 756453839 = 233 ⋅3246583.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938354657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938354687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54107 + ... + 69312.

It is an arithmetic number, because the mean of its divisors is an integer number (234621420).

Almost surely, 2^938354657 is an apocalyptic number.

It is an amenable number.

938354657 is a deficient number, since it is larger than the sum of its proper divisors (131023).

938354657 is a wasteful number, since it uses less digits than its factorization.

938354657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131022.

The product of its digits is 2721600, while the sum is 50.

The square root of 938354657 is about 30632.5750958028. The cubic root of 938354657 is about 979.0142305422.

The spelling of 938354657 in words is "nine hundred thirty-eight million, three hundred fifty-four thousand, six hundred fifty-seven".