1954987 has 2 divisors, whose sum is σ = 1954988. Its totient is φ = 1954986.

The previous prime is 1954963. The next prime is 1954991. The reversal of 1954987 is 7894591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1954987 - 2¹¹ = 1952939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954907) 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, 977493 + 977494.

It is an arithmetic number, because the mean of its divisors is an integer number (977494).

2^1954987 is an apocalyptic number.

1954987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954987 is an equidigital number, since it uses as much as digits as its factorization.

1954987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 1954987 is about 1398.2084966127. The cubic root of 1954987 is about 125.0397100502.

The spelling of 1954987 in words is "one million, nine hundred fifty-four thousand, nine hundred eighty-seven".