2158223501 has 8 divisors (see below), whose sum is σ = 2468172864. Its totient is φ = 1848682080.

The previous prime is 2158223467. The next prime is 2158223513. The reversal of 2158223501 is 1053228512.

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

It is not a de Polignac number, because 2158223501 - 2⁶ = 2158223437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158223531) 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, 90560 + ... + 111881.

It is an arithmetic number, because the mean of its divisors is an integer number (308521608).

Almost surely, 2^2158223501 is an apocalyptic number.

It is an amenable number.

2158223501 is a deficient number, since it is larger than the sum of its proper divisors (309949363).

2158223501 is a wasteful number, since it uses less digits than its factorization.

2158223501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203971.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 2158223501 is about 46456.6841369463. The cubic root of 2158223501 is about 1292.3063324613.

The spelling of 2158223501 in words is "two billion, one hundred fifty-eight million, two hundred twenty-three thousand, five hundred one".