10491938 has 4 divisors (see below), whose sum is σ = 15737910. Its totient is φ = 5245968.

The previous prime is 10491917. The next prime is 10491953. The reversal of 10491938 is 83919401.

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., 5726449 + 4765489 = 2393^2 + 2183^2 .

It is a super-2 number, since 2×10491938² = 220161525991688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10491898 and 10491907.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2622983 + ... + 2622986.

Almost surely, 2^10491938 is an apocalyptic number.

10491938 is a deficient number, since it is larger than the sum of its proper divisors (5245972).

10491938 is an equidigital number, since it uses as much as digits as its factorization.

10491938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245971.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 10491938 is about 3239.1261167173. The cubic root of 10491938 is about 218.9198987028.

The spelling of 10491938 in words is "ten million, four hundred ninety-one thousand, nine hundred thirty-eight".