13801946 has 4 divisors (see below), whose sum is σ = 20702922. Its totient is φ = 6900972.

The previous prime is 13801939. The next prime is 13801951. The reversal of 13801946 is 64910831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64910831 = 41 ⋅1583191.

It can be written as a sum of positive squares in only one way, i.e., 10962721 + 2839225 = 3311^2 + 1685^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3450485 + ... + 3450488.

Almost surely, 2^13801946 is an apocalyptic number.

13801946 is a deficient number, since it is larger than the sum of its proper divisors (6900976).

13801946 is an equidigital number, since it uses as much as digits as its factorization.

13801946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900975.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 13801946 is about 3715.0970377636. The cubic root of 13801946 is about 239.8723047553.

The spelling of 13801946 in words is "thirteen million, eight hundred one thousand, nine hundred forty-six".