19149953 has 2 divisors, whose sum is σ = 19149954. Its totient is φ = 19149952.

The previous prime is 19149943. The next prime is 19149959. The reversal of 19149953 is 35994191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 7907344 = 3353^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 19149953 - 2¹⁰ = 19148929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19149953.

It is not a weakly prime, because it can be changed into another prime (19149959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9574976 + 9574977.

It is an arithmetic number, because the mean of its divisors is an integer number (9574977).

Almost surely, 2^19149953 is an apocalyptic number.

It is an amenable number.

19149953 is a deficient number, since it is larger than the sum of its proper divisors (1).

19149953 is an equidigital number, since it uses as much as digits as its factorization.

19149953 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 19149953 is about 4376.0659272913. The cubic root of 19149953 is about 267.5403170955.

It can be divided in two parts, 19149 and 953, that added together give a palindrome (20102).

The spelling of 19149953 in words is "nineteen million, one hundred forty-nine thousand, nine hundred fifty-three".