2227991556 has 48 divisors (see below), whose sum is σ = 6101895296. Its totient is φ = 619363584.

The previous prime is 2227991527. The next prime is 2227991567. The reversal of 2227991556 is 6551997222.

It is a happy number.

It is a super-2 number, since 2×2227991556² = 9927892747214602272, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 355321 + ... + 361536.

Almost surely, 2^2227991556 is an apocalyptic number.

It is an amenable number.

2227991556 is an abundant number, since it is smaller than the sum of its proper divisors (3873903740).

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

2227991556 is a wasteful number, since it uses less digits than its factorization.

2227991556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716908 (or 716906 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 2227991556 is about 47201.6054387984. The cubic root of 2227991556 is about 1306.0842133987.

The spelling of 2227991556 in words is "two billion, two hundred twenty-seven million, nine hundred ninety-one thousand, five hundred fifty-six".