2158359969 has 8 divisors (see below), whose sum is σ = 2932111872. Its totient is φ = 1411757360.

The previous prime is 2158359949. The next prime is 2158359977. The reversal of 2158359969 is 9699538512.

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

It is a cyclic number.

It is not a de Polignac number, because 2158359969 - 2¹³ = 2158351777 is a prime.

It is a super-2 number, since 2×2158359969² = 9317035511563361922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2158359949) 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, 6787137 + ... + 6787454.

It is an arithmetic number, because the mean of its divisors is an integer number (366513984).

Almost surely, 2^2158359969 is an apocalyptic number.

It is an amenable number.

2158359969 is a deficient number, since it is larger than the sum of its proper divisors (773751903).

2158359969 is a wasteful number, since it uses less digits than its factorization.

2158359969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13574647.

The product of its digits is 5248800, while the sum is 57.

The square root of 2158359969 is about 46458.1528797691. The cubic root of 2158359969 is about 1292.3335701012. Note that the first 3 decimals are identical.

The spelling of 2158359969 in words is "two billion, one hundred fifty-eight million, three hundred fifty-nine thousand, nine hundred sixty-nine".