12951938 has 4 divisors (see below), whose sum is σ = 19427910. Its totient is φ = 6475968.

The previous prime is 12951929. The next prime is 12951959. The reversal of 12951938 is 83915921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83915921 = 2099 ⋅39979.

It can be written as a sum of positive squares in only one way, i.e., 9628609 + 3323329 = 3103^2 + 1823^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3237983 + ... + 3237986.

Almost surely, 2^12951938 is an apocalyptic number.

12951938 is a deficient number, since it is larger than the sum of its proper divisors (6475972).

12951938 is an equidigital number, since it uses as much as digits as its factorization.

12951938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475971.

The product of its digits is 19440, while the sum is 38.

The square root of 12951938 is about 3598.8801035878. The cubic root of 12951938 is about 234.8433420972.

The spelling of 12951938 in words is "twelve million, nine hundred fifty-one thousand, nine hundred thirty-eight".