2051523969 has 8 divisors (see below), whose sum is σ = 2984034912. Its totient is φ = 1243347840.

The previous prime is 2051523967. The next prime is 2051523979. The reversal of 2051523969 is 9693251502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2051523969 - 2¹ = 2051523967 is a prime.

It is a super-2 number, since 2×2051523969² = 8417501190763025922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2051523969.

It is not an unprimeable number, because it can be changed into a prime (2051523961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31083664 + ... + 31083729.

It is an arithmetic number, because the mean of its divisors is an integer number (373004364).

Almost surely, 2^2051523969 is an apocalyptic number.

It is an amenable number.

2051523969 is a deficient number, since it is larger than the sum of its proper divisors (932510943).

2051523969 is a wasteful number, since it uses less digits than its factorization.

2051523969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62167407.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 2051523969 is about 45293.7519863391. The cubic root of 2051523969 is about 1270.6488033818.

The spelling of 2051523969 in words is "two billion, fifty-one million, five hundred twenty-three thousand, nine hundred sixty-nine".