2157443315 has 8 divisors (see below), whose sum is σ = 2589194160. Its totient is φ = 1725779872.

The previous prime is 2157443291. The next prime is 2157443317. The reversal of 2157443315 is 5133447512.

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 2157443315 - 2¹⁶ = 2157377779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2157443317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61076 + ... + 89694.

It is an arithmetic number, because the mean of its divisors is an integer number (323649270).

Almost surely, 2^2157443315 is an apocalyptic number.

2157443315 is a deficient number, since it is larger than the sum of its proper divisors (431750845).

2157443315 is a wasteful number, since it uses less digits than its factorization.

2157443315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43701.

The product of its digits is 50400, while the sum is 35.

The square root of 2157443315 is about 46448.2864592441. The cubic root of 2157443315 is about 1292.1505931348.

The spelling of 2157443315 in words is "two billion, one hundred fifty-seven million, four hundred forty-three thousand, three hundred fifteen".