1101009980 has 48 divisors (see below), whose sum is σ = 2646275520. Its totient is φ = 376939008.

The previous prime is 1101009979. The next prime is 1101009997. The reversal of 1101009980 is 899001011.

It is a congruent number.

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, 97256 + ... + 107984.

It is an arithmetic number, because the mean of its divisors is an integer number (55130740).

Almost surely, 2^1101009980 is an apocalyptic number.

1101009980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101009980 is an abundant number, since it is smaller than the sum of its proper divisors (1545265540).

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

1101009980 is a wasteful number, since it uses less digits than its factorization.

1101009980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11478 (or 11476 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1101009980 is about 33181.4704315526. The cubic root of 1101009980 is about 1032.5959528341.

The spelling of 1101009980 in words is "one billion, one hundred one million, nine thousand, nine hundred eighty".