2166073526 has 4 divisors (see below), whose sum is σ = 3249110292. Its totient is φ = 1083036762.

The previous prime is 2166073477. The next prime is 2166073543. The reversal of 2166073526 is 6253706612.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2166073526.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541518380 + ... + 541518383.

It is an arithmetic number, because the mean of its divisors is an integer number (812277573).

Almost surely, 2^2166073526 is an apocalyptic number.

2166073526 is a deficient number, since it is larger than the sum of its proper divisors (1083036766).

2166073526 is a wasteful number, since it uses less digits than its factorization.

2166073526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083036765.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 2166073526 is about 46541.0950236455. The cubic root of 2166073526 is about 1293.8712556860.

The spelling of 2166073526 in words is "two billion, one hundred sixty-six million, seventy-three thousand, five hundred twenty-six".