1937641 has 2 divisors, whose sum is σ = 1937642. Its totient is φ = 1937640.

The previous prime is 1937629. The next prime is 1937651. The reversal of 1937641 is 1467391.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1390041 + 547600 = 1179^2 + 740^2 .

It is an emirp because it is prime and its reverse (1467391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1937641 - 2⁷ = 1937513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1937651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968820 + 968821.

It is an arithmetic number, because the mean of its divisors is an integer number (968821).

2^1937641 is an apocalyptic number.

It is an amenable number.

1937641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1937641 is an equidigital number, since it uses as much as digits as its factorization.

1937641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 1937641 is about 1391.9917384812. The cubic root of 1937641 is about 124.6687978830.

The spelling of 1937641 in words is "one million, nine hundred thirty-seven thousand, six hundred forty-one".