1021940488 has 64 divisors (see below), whose sum is σ = 2008540800. Its totient is φ = 487119360.

The previous prime is 1021940477. The next prime is 1021940561. The reversal of 1021940488 is 8840491201.

It is a super-2 number, since 2×1021940488² = 2088724722027356288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2498428 + ... + 2498836.

It is an arithmetic number, because the mean of its divisors is an integer number (31383450).

Almost surely, 2^1021940488 is an apocalyptic number.

It is an amenable number.

1021940488 is a deficient number, since it is larger than the sum of its proper divisors (986600312).

1021940488 is a wasteful number, since it uses less digits than its factorization.

1021940488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1021940488 is about 31967.8039283276. The cubic root of 1021940488 is about 1007.2606513552.

The spelling of 1021940488 in words is "one billion, twenty-one million, nine hundred forty thousand, four hundred eighty-eight".