2221838402 has 16 divisors (see below), whose sum is σ = 3873424320. Its totient is φ = 936076848.

The previous prime is 2221838369. The next prime is 2221838449. The reversal of 2221838402 is 2048381222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344113 + ... + 1345764.

It is an arithmetic number, because the mean of its divisors is an integer number (242089020).

Almost surely, 2^2221838402 is an apocalyptic number.

2221838402 is a deficient number, since it is larger than the sum of its proper divisors (1651585918).

2221838402 is a wasteful number, since it uses less digits than its factorization.

2221838402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689945.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2221838402 is about 47136.3808750736. The cubic root of 2221838402 is about 1304.8807457953.

The spelling of 2221838402 in words is "two billion, two hundred twenty-one million, eight hundred thirty-eight thousand, four hundred two".