1940149 has 2 divisors, whose sum is σ = 1940150. Its totient is φ = 1940148.

The previous prime is 1940143. The next prime is 1940153. The reversal of 1940149 is 9410491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1822500 + 117649 = 1350^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940149 - 2¹³ = 1931957 is a prime.

1940149 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940143) 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, 970074 + 970075.

It is an arithmetic number, because the mean of its divisors is an integer number (970075).

2^1940149 is an apocalyptic number.

It is an amenable number.

1940149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940149 is an equidigital number, since it uses as much as digits as its factorization.

1940149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1940149 is about 1392.8923145742. The cubic root of 1940149 is about 124.7225633535.

The spelling of 1940149 in words is "one million, nine hundred forty thousand, one hundred forty-nine".