2039869691 has 2 divisors, whose sum is σ = 2039869692. Its totient is φ = 2039869690.

The previous prime is 2039869687. The next prime is 2039869693. The reversal of 2039869691 is 1969689302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2039869691 - 2² = 2039869687 is a prime.

It is a super-2 number, since 2×2039869691² = 8322136712520870962, which contains 22 as substring.

Together with 2039869693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2039869693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019934845 + 1019934846.

It is an arithmetic number, because the mean of its divisors is an integer number (1019934846).

Almost surely, 2^2039869691 is an apocalyptic number.

2039869691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2039869691 is an equidigital number, since it uses as much as digits as its factorization.

2039869691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 2039869691 is about 45164.9165946313. The cubic root of 2039869691 is about 1268.2381361944.

The spelling of 2039869691 in words is "two billion, thirty-nine million, eight hundred sixty-nine thousand, six hundred ninety-one".