2123001988 has 6 divisors (see below), whose sum is σ = 3715253486. Its totient is φ = 1061500992.

The previous prime is 2123001967. The next prime is 2123002001. The reversal of 2123001988 is 8891003212.

It can be written as a sum of positive squares in only one way, i.e., 1803021444 + 319980544 = 42462^2 + 17888^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265375245 + ... + 265375252.

Almost surely, 2^2123001988 is an apocalyptic number.

It is an amenable number.

2123001988 is a deficient number, since it is larger than the sum of its proper divisors (1592251498).

2123001988 is a wasteful number, since it uses less digits than its factorization.

2123001988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530750501 (or 530750499 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2123001988 is about 46076.0457070700. The cubic root of 2123001988 is about 1285.2377316066.

The spelling of 2123001988 in words is "two billion, one hundred twenty-three million, one thousand, nine hundred eighty-eight".