1010999887 has 2 divisors, whose sum is σ = 1010999888. Its totient is φ = 1010999886.

The previous prime is 1010999881. The next prime is 1010999897. The reversal of 1010999887 is 7889990101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010999887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010999881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505499943 + 505499944.

It is an arithmetic number, because the mean of its divisors is an integer number (505499944).

Almost surely, 2^1010999887 is an apocalyptic number.

1010999887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010999887 is an equidigital number, since it uses as much as digits as its factorization.

1010999887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 52.

The square root of 1010999887 is about 31796.2244142288. The cubic root of 1010999887 is about 1003.6532663921.

The spelling of 1010999887 in words is "one billion, ten million, nine hundred ninety-nine thousand, eight hundred eighty-seven".