1902940450487 has 2 divisors, whose sum is σ = 1902940450488. Its totient is φ = 1902940450486.

The previous prime is 1902940450441. The next prime is 1902940450577. The reversal of 1902940450487 is 7840540492091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1902940450487 - 2¹⁴ = 1902940434103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1902940450417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951470225243 + 951470225244.

It is an arithmetic number, because the mean of its divisors is an integer number (951470225244).

Almost surely, 2^{1902940450487} is an apocalyptic number.

1902940450487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1902940450487 is an equidigital number, since it uses as much as digits as its factorization.

1902940450487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 1902940450487 in words is "one trillion, nine hundred two billion, nine hundred forty million, four hundred fifty thousand, four hundred eighty-seven".