2126537347 has 4 divisors (see below), whose sum is σ = 2319858936. Its totient is φ = 1933215760.

The previous prime is 2126537339. The next prime is 2126537389. The reversal of 2126537347 is 7437356212.

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

It is a cyclic number.

It is not a de Polignac number, because 2126537347 - 2³ = 2126537339 is a prime.

It is a super-3 number, since 3×2126537347³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126537947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96660778 + ... + 96660799.

It is an arithmetic number, because the mean of its divisors is an integer number (579964734).

Almost surely, 2^2126537347 is an apocalyptic number.

2126537347 is a deficient number, since it is larger than the sum of its proper divisors (193321589).

2126537347 is a wasteful number, since it uses less digits than its factorization.

2126537347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193321588.

The product of its digits is 211680, while the sum is 40.

The square root of 2126537347 is about 46114.3941410922. The cubic root of 2126537347 is about 1285.9507560474.

The spelling of 2126537347 in words is "two billion, one hundred twenty-six million, five hundred thirty-seven thousand, three hundred forty-seven".