2158663803 has 8 divisors (see below), whose sum is σ = 2906162688. Its totient is φ = 1425137064.

The previous prime is 2158663753. The next prime is 2158663811. The reversal of 2158663803 is 3083668512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2158663803 - 2¹² = 2158659707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2158663823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3492675 + ... + 3493292.

It is an arithmetic number, because the mean of its divisors is an integer number (363270336).

Almost surely, 2^2158663803 is an apocalyptic number.

2158663803 is a deficient number, since it is larger than the sum of its proper divisors (747498885).

2158663803 is a wasteful number, since it uses less digits than its factorization.

2158663803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986073.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2158663803 is about 46461.4227397311. The cubic root of 2158663803 is about 1292.3942081876.

The spelling of 2158663803 in words is "two billion, one hundred fifty-eight million, six hundred sixty-three thousand, eight hundred three".