2153953858 has 12 divisors (see below), whose sum is σ = 3758429862. Its totient is φ = 923123040.

The previous prime is 2153953847. The next prime is 2153953871. The reversal of 2153953858 is 8583593512.

It can be written as a sum of positive squares in only one way, i.e., 2128622769 + 25331089 = 46137^2 + 5033^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10989463 + ... + 10989658.

Almost surely, 2^2153953858 is an apocalyptic number.

2153953858 is a deficient number, since it is larger than the sum of its proper divisors (1604476004).

2153953858 is a wasteful number, since it uses less digits than its factorization.

2153953858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21979137 (or 21979130 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 49.

The square root of 2153953858 is about 46410.7084410484. The cubic root of 2153953858 is about 1291.4535741225.

The spelling of 2153953858 in words is "two billion, one hundred fifty-three million, nine hundred fifty-three thousand, eight hundred fifty-eight".