2151201747 has 4 divisors (see below), whose sum is σ = 2868269000. Its totient is φ = 1434134496.

The previous prime is 2151201733. The next prime is 2151201757. The reversal of 2151201747 is 7471021512.

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

It is not a de Polignac number, because 2151201747 - 2¹⁴ = 2151185363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151201757) 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, 358533622 + ... + 358533627.

It is an arithmetic number, because the mean of its divisors is an integer number (717067250).

Almost surely, 2^2151201747 is an apocalyptic number.

2151201747 is a deficient number, since it is larger than the sum of its proper divisors (717067253).

2151201747 is an equidigital number, since it uses as much as digits as its factorization.

2151201747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717067252.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 2151201747 is about 46381.0494383213. The cubic root of 2151201747 is about 1290.9033087898.

The spelling of 2151201747 in words is "two billion, one hundred fifty-one million, two hundred one thousand, seven hundred forty-seven".