2164237408 has 48 divisors (see below), whose sum is σ = 4491789120. Its totient is φ = 1023636096.

The previous prime is 2164237403. The next prime is 2164237409. The reversal of 2164237408 is 8047324612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164237403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476235 + ... + 480757.

It is an arithmetic number, because the mean of its divisors is an integer number (93578940).

Almost surely, 2^2164237408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2164237408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245894560).

2164237408 is an abundant number, since it is smaller than the sum of its proper divisors (2327551712).

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

2164237408 is a wasteful number, since it uses less digits than its factorization.

2164237408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339 (or 5331 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 2164237408 is about 46521.3650702556. The cubic root of 2164237408 is about 1293.5055598989.

The spelling of 2164237408 in words is "two billion, one hundred sixty-four million, two hundred thirty-seven thousand, four hundred eight".