1948553 has 2 divisors, whose sum is σ = 1948554. Its totient is φ = 1948552.

The previous prime is 1948549. The next prime is 1948559. The reversal of 1948553 is 3558491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1352569 + 595984 = 1163^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1948553 - 2² = 1948549 is a prime.

It is not a weakly prime, because it can be changed into another prime (1948559) by changing a digit.

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, 974276 + 974277.

It is an arithmetic number, because the mean of its divisors is an integer number (974277).

2^1948553 is an apocalyptic number.

It is an amenable number.

1948553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948553 is an equidigital number, since it uses as much as digits as its factorization.

1948553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 1948553 is about 1395.9057991140. The cubic root of 1948553 is about 124.9023877947.

The spelling of 1948553 in words is "one million, nine hundred forty-eight thousand, five hundred fifty-three".