2051335869 has 20 divisors (see below), whose sum is σ = 3008671680. Its totient is φ = 1243207240.

The previous prime is 2051335861. The next prime is 2051335901. The reversal of 2051335869 is 9685331502.

It is not a de Polignac number, because 2051335869 - 2³ = 2051335861 is a prime.

It is a super-2 number, since 2×2051335869² = 8415957694891970322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2051335869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051335861) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20572 + ... + 67274.

It is an arithmetic number, because the mean of its divisors is an integer number (150433584).

Almost surely, 2^2051335869 is an apocalyptic number.

It is an amenable number.

2051335869 is a deficient number, since it is larger than the sum of its proper divisors (957335811).

2051335869 is an frugal number, since it uses more digits than its factorization.

2051335869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46750 (or 46717 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 2051335869 is about 45291.6754934061. The cubic root of 2051335869 is about 1270.6099678058.

The spelling of 2051335869 in words is "two billion, fifty-one million, three hundred thirty-five thousand, eight hundred sixty-nine".