2137657769 has 4 divisors (see below), whose sum is σ = 2302092996. Its totient is φ = 1973222544.

The previous prime is 2137657679. The next prime is 2137657813. The reversal of 2137657769 is 9677567312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 364237225 + 1773420544 = 19085^2 + 42112^2 .

It is a cyclic number.

It is not a de Polignac number, because 2137657769 - 2¹² = 2137653673 is a prime.

It is a super-2 number, since 2×2137657769² = 9139161474732114722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2137657769.

It is not an unprimeable number, because it can be changed into a prime (2137657069) 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 in 3 ways as a sum of consecutive naturals, for example, 82217594 + ... + 82217619.

It is an arithmetic number, because the mean of its divisors is an integer number (575523249).

Almost surely, 2^2137657769 is an apocalyptic number.

It is an amenable number.

2137657769 is a deficient number, since it is larger than the sum of its proper divisors (164435227).

2137657769 is a wasteful number, since it uses less digits than its factorization.

2137657769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164435226.

The product of its digits is 3333960, while the sum is 53.

The square root of 2137657769 is about 46234.8112248769. The cubic root of 2137657769 is about 1288.1884250475.

The spelling of 2137657769 in words is "two billion, one hundred thirty-seven million, six hundred fifty-seven thousand, seven hundred sixty-nine".