2209147836 has 24 divisors (see below), whose sum is σ = 5891061120. Its totient is φ = 631185072.

The previous prime is 2209147817. The next prime is 2209147849. The reversal of 2209147836 is 6387419022.

It is a super-2 number, since 2×2209147836² = 9760668322606965792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13149606 + ... + 13149773.

It is an arithmetic number, because the mean of its divisors is an integer number (245460880).

Almost surely, 2^2209147836 is an apocalyptic number.

It is an amenable number.

2209147836 is an abundant number, since it is smaller than the sum of its proper divisors (3681913284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2209147836 is a wasteful number, since it uses less digits than its factorization.

2209147836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26299393 (or 26299391 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2209147836 is about 47001.5726970917. The cubic root of 2209147836 is about 1302.3916202987.

The spelling of 2209147836 in words is "two billion, two hundred nine million, one hundred forty-seven thousand, eight hundred thirty-six".