2115321154 has 8 divisors (see below), whose sum is σ = 3258738108. Its totient is φ = 1029075120.

The previous prime is 2115321149. The next prime is 2115321181. The reversal of 2115321154 is 4511235112.

It can be written as a sum of positive squares in 2 ways, for example, as 2113700625 + 1620529 = 45975^2 + 1273^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14292637 + ... + 14292784.

Almost surely, 2^2115321154 is an apocalyptic number.

2115321154 is a deficient number, since it is larger than the sum of its proper divisors (1143416954).

2115321154 is a wasteful number, since it uses less digits than its factorization.

2115321154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28585460.

The product of its digits is 1200, while the sum is 25.

The square root of 2115321154 is about 45992.6206472299. The cubic root of 2115321154 is about 1283.6858997059.

Adding to 2115321154 its reverse (4511235112), we get a palindrome (6626556266).

The spelling of 2115321154 in words is "two billion, one hundred fifteen million, three hundred twenty-one thousand, one hundred fifty-four".