1021141988 has 12 divisors (see below), whose sum is σ = 1787296560. Its totient is φ = 510485832.

The previous prime is 1021141949. The next prime is 1021141991. The reversal of 1021141988 is 8891411201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11195 + ... + 46557.

It is an arithmetic number, because the mean of its divisors is an integer number (148941380).

Almost surely, 2^1021141988 is an apocalyptic number.

It is an amenable number.

1021141988 is a deficient number, since it is larger than the sum of its proper divisors (766154572).

1021141988 is a wasteful number, since it uses less digits than its factorization.

1021141988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42586 (or 42584 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1021141988 is about 31955.3123596062. The cubic root of 1021141988 is about 1006.9982397270.

The spelling of 1021141988 in words is "one billion, twenty-one million, one hundred forty-one thousand, nine hundred eighty-eight".