19941953 has 2 divisors, whose sum is σ = 19941954. Its totient is φ = 19941952.

The previous prime is 19941931. The next prime is 19941973. The reversal of 19941953 is 35914991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18386944 + 1555009 = 4288^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 19941953 - 2¹⁸ = 19679809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19941953.

It is not a weakly prime, because it can be changed into another prime (19941923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9970976 + 9970977.

It is an arithmetic number, because the mean of its divisors is an integer number (9970977).

Almost surely, 2^19941953 is an apocalyptic number.

It is an amenable number.

19941953 is a deficient number, since it is larger than the sum of its proper divisors (1).

19941953 is an equidigital number, since it uses as much as digits as its factorization.

19941953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 41.

The square root of 19941953 is about 4465.6413873037. The cubic root of 19941953 is about 271.1789008582.

The spelling of 19941953 in words is "nineteen million, nine hundred forty-one thousand, nine hundred fifty-three".