2161370523 has 16 divisors (see below), whose sum is σ = 3119597600. Its totient is φ = 1323177984.

The previous prime is 2161370489. The next prime is 2161370579. The reversal of 2161370523 is 3250731612.

2161370523 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2161370523 - 2¹⁰ = 2161369499 is a prime.

It is a super-3 number, since 3×2161370523³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2161370723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136048 + ... + 151101.

It is an arithmetic number, because the mean of its divisors is an integer number (194974850).

Almost surely, 2^2161370523 is an apocalyptic number.

2161370523 is a deficient number, since it is larger than the sum of its proper divisors (958227077).

2161370523 is a wasteful number, since it uses less digits than its factorization.

2161370523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287358.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2161370523 is about 46490.5422962563. The cubic root of 2161370523 is about 1292.9341545762.

The spelling of 2161370523 in words is "two billion, one hundred sixty-one million, three hundred seventy thousand, five hundred twenty-three".