2153746970 has 16 divisors (see below), whose sum is σ = 3884370120. Its totient is φ = 859804224.

The previous prime is 2153746961. The next prime is 2153746981. The reversal of 2153746970 is 796473512.

It can be written as a sum of positive squares in 4 ways, for example, as 2051999401 + 101747569 = 45299^2 + 10087^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206477 + ... + 216656.

Almost surely, 2^2153746970 is an apocalyptic number.

2153746970 is a deficient number, since it is larger than the sum of its proper divisors (1730623150).

2153746970 is a wasteful number, since it uses less digits than its factorization.

2153746970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423649.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 2153746970 is about 46408.4795053663. The cubic root of 2153746970 is about 1291.4122246138.

The spelling of 2153746970 in words is "two billion, one hundred fifty-three million, seven hundred forty-six thousand, nine hundred seventy".