2201778902 has 16 divisors (see below), whose sum is σ = 3506868432. Its totient is φ = 1033190400.

The previous prime is 2201778899. The next prime is 2201778949. The reversal of 2201778902 is 2098771022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79724 + ... + 103727.

It is an arithmetic number, because the mean of its divisors is an integer number (219179277).

Almost surely, 2^2201778902 is an apocalyptic number.

2201778902 is a deficient number, since it is larger than the sum of its proper divisors (1305089530).

2201778902 is a wasteful number, since it uses less digits than its factorization.

2201778902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183823.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 2201778902 is about 46923.1169254558. The cubic root of 2201778902 is about 1300.9419016110.

The spelling of 2201778902 in words is "two billion, two hundred one million, seven hundred seventy-eight thousand, nine hundred two".