2151245473 has 16 divisors (see below), whose sum is σ = 2341785600. Its totient is φ = 1964347200.

The previous prime is 2151245443. The next prime is 2151245477. The reversal of 2151245473 is 3745421512.

It is a cyclic number.

It is not a de Polignac number, because 2151245473 - 2²¹ = 2149148321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151245477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630308 + ... + 1631626.

It is an arithmetic number, because the mean of its divisors is an integer number (146361600).

Almost surely, 2^2151245473 is an apocalyptic number.

It is an amenable number.

2151245473 is a deficient number, since it is larger than the sum of its proper divisors (190540127).

2151245473 is a wasteful number, since it uses less digits than its factorization.

2151245473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592.

The product of its digits is 33600, while the sum is 34.

The square root of 2151245473 is about 46381.5208137896. The cubic root of 2151245473 is about 1290.9120551655.

Adding to 2151245473 its reverse (3745421512), we get a palindrome (5896666985).

The spelling of 2151245473 in words is "two billion, one hundred fifty-one million, two hundred forty-five thousand, four hundred seventy-three".