2126156473 has 4 divisors (see below), whose sum is σ = 2429893120. Its totient is φ = 1822419828.

The previous prime is 2126156471. The next prime is 2126156477. The reversal of 2126156473 is 3746516212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2126156473 - 2¹ = 2126156471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126156471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151868313 + ... + 151868326.

It is an arithmetic number, because the mean of its divisors is an integer number (607473280).

Almost surely, 2^2126156473 is an apocalyptic number.

It is an amenable number.

2126156473 is a deficient number, since it is larger than the sum of its proper divisors (303736647).

2126156473 is an equidigital number, since it uses as much as digits as its factorization.

2126156473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303736646.

The product of its digits is 60480, while the sum is 37.

The square root of 2126156473 is about 46110.2642911532. The cubic root of 2126156473 is about 1285.8739779535.

The spelling of 2126156473 in words is "two billion, one hundred twenty-six million, one hundred fifty-six thousand, four hundred seventy-three".