1889466872228 has 24 divisors (see below), whose sum is σ = 3611072122560. Its totient is φ = 859779073440.

The previous prime is 1889466872201. The next prime is 1889466872257. The reversal of 1889466872228 is 8222786649881.

It is a happy number.

It is a super-2 number, since 2×1889466872228² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (71).

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, 255882938 + ... + 255890321.

It is an arithmetic number, because the mean of its divisors is an integer number (150461338440).

Almost surely, 2^{1889466872228} is an apocalyptic number.

It is an amenable number.

1889466872228 is a deficient number, since it is larger than the sum of its proper divisors (1721605250332).

1889466872228 is a wasteful number, since it uses less digits than its factorization.

1889466872228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511773347 (or 511773345 counting only the distinct ones).

The product of its digits is 297271296, while the sum is 71.

The spelling of 1889466872228 in words is "one trillion, eight hundred eighty-nine billion, four hundred sixty-six million, eight hundred seventy-two thousand, two hundred twenty-eight".