2158373309 has 8 divisors (see below), whose sum is σ = 2226503328. Its totient is φ = 2091299760.

The previous prime is 2158373279. The next prime is 2158373317. The reversal of 2158373309 is 9033738512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158373309 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 (2158373359) 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, 259967 + ... + 268140.

It is an arithmetic number, because the mean of its divisors is an integer number (278312916).

Almost surely, 2^2158373309 is an apocalyptic number.

It is an amenable number.

2158373309 is a deficient number, since it is larger than the sum of its proper divisors (68130019).

2158373309 is an equidigital number, since it uses as much as digits as its factorization.

2158373309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528235.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 2158373309 is about 46458.2964496117. The cubic root of 2158373309 is about 1292.3362325694.

The spelling of 2158373309 in words is "two billion, one hundred fifty-eight million, three hundred seventy-three thousand, three hundred nine".