2090987077 has 2 divisors, whose sum is σ = 2090987078. Its totient is φ = 2090987076.

The previous prime is 2090987071. The next prime is 2090987137. The reversal of 2090987077 is 7707890902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1819363716 + 271623361 = 42654^2 + 16481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2090987077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2090987077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2090987071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045493538 + 1045493539.

It is an arithmetic number, because the mean of its divisors is an integer number (1045493539).

Almost surely, 2^2090987077 is an apocalyptic number.

It is an amenable number.

2090987077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090987077 is an equidigital number, since it uses as much as digits as its factorization.

2090987077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 2090987077 is about 45727.3121558659. The cubic root of 2090987077 is about 1278.7445121623.

The spelling of 2090987077 in words is "two billion, ninety million, nine hundred eighty-seven thousand, seventy-seven".