2690991043 has 16 divisors (see below), whose sum is σ = 2965255776. Its totient is φ = 2426976000.

The previous prime is 2690991029. The next prime is 2690991049. The reversal of 2690991043 is 3401990962.

It is a cyclic number.

It is not a de Polignac number, because 2690991043 - 2⁵ = 2690991011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690991049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88293 + ... + 114793.

It is an arithmetic number, because the mean of its divisors is an integer number (185328486).

Almost surely, 2^2690991043 is an apocalyptic number.

2690991043 is a deficient number, since it is larger than the sum of its proper divisors (274264733).

2690991043 is a wasteful number, since it uses less digits than its factorization.

2690991043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26694.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 2690991043 is about 51874.7630645191. The cubic root of 2690991043 is about 1390.9261882712.

The spelling of 2690991043 in words is "two billion, six hundred ninety million, nine hundred ninety-one thousand, forty-three".