1973287 has 2 divisors, whose sum is σ = 1973288. Its totient is φ = 1973286.

The previous prime is 1973281. The next prime is 1973291. The reversal of 1973287 is 7823791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973287 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973281) 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, 986643 + 986644.

It is an arithmetic number, because the mean of its divisors is an integer number (986644).

2^1973287 is an apocalyptic number.

1973287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973287 is an equidigital number, since it uses as much as digits as its factorization.

1973287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 37.

The square root of 1973287 is about 1404.7373419967. The cubic root of 1973287 is about 125.4286510526.

The spelling of 1973287 in words is "one million, nine hundred seventy-three thousand, two hundred eighty-seven".