1906773487 has 2 divisors, whose sum is σ = 1906773488. Its totient is φ = 1906773486.

The previous prime is 1906773433. The next prime is 1906773559. The reversal of 1906773487 is 7843776091.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1906773487 is a prime.

It is a super-2 number, since 2×1906773487² = 7271570261452278338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906723487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953386743 + 953386744.

It is an arithmetic number, because the mean of its divisors is an integer number (953386744).

Almost surely, 2^1906773487 is an apocalyptic number.

1906773487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906773487 is an equidigital number, since it uses as much as digits as its factorization.

1906773487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 1906773487 is about 43666.6175355958. The cubic root of 1906773487 is about 1240.0324061510.

The spelling of 1906773487 in words is "one billion, nine hundred six million, seven hundred seventy-three thousand, four hundred eighty-seven".