2146973851 has 16 divisors (see below), whose sum is σ = 2419642368. Its totient is φ = 1887321600.

The previous prime is 2146973831. The next prime is 2146973869. The reversal of 2146973851 is 1583796412.

It is a cyclic number.

It is not a de Polignac number, because 2146973851 - 2²³ = 2138585243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2146973831) 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, 778491 + ... + 781243.

It is an arithmetic number, because the mean of its divisors is an integer number (151227648).

Almost surely, 2^2146973851 is an apocalyptic number.

2146973851 is a deficient number, since it is larger than the sum of its proper divisors (272668517).

2146973851 is a wasteful number, since it uses less digits than its factorization.

2146973851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082.

The product of its digits is 362880, while the sum is 46.

The square root of 2146973851 is about 46335.4491831039. The cubic root of 2146973851 is about 1290.0570555459.

The spelling of 2146973851 in words is "two billion, one hundred forty-six million, nine hundred seventy-three thousand, eight hundred fifty-one".