2109853538 has 8 divisors (see below), whose sum is σ = 3408224988. Its totient is φ = 973778544.

The previous prime is 2109853433. The next prime is 2109853573. The reversal of 2109853538 is 8353589012.

It can be written as a sum of positive squares in 2 ways, for example, as 1893381169 + 216472369 = 43513^2 + 14713^2 .

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

It is a super-2 number, since 2×2109853538² = 8902963903622234888, which contains 22 as substring.

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, 40574081 + ... + 40574132.

Almost surely, 2^2109853538 is an apocalyptic number.

2109853538 is a deficient number, since it is larger than the sum of its proper divisors (1298371450).

2109853538 is a wasteful number, since it uses less digits than its factorization.

2109853538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81148228.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 2109853538 is about 45933.1420436268. The cubic root of 2109853538 is about 1282.5789350117.

The spelling of 2109853538 in words is "two billion, one hundred nine million, eight hundred fifty-three thousand, five hundred thirty-eight".