1009776900 has 144 divisors (see below), whose sum is σ = 3209169600. Its totient is φ = 243110400.

The previous prime is 1009776893. The next prime is 1009776913. The reversal of 1009776900 is 96779001.

It is a super-2 number, since 2×1009776900² = 2039298775547220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517126 + ... + 519074.

It is an arithmetic number, because the mean of its divisors is an integer number (22285900).

Almost surely, 2^1009776900 is an apocalyptic number.

1009776900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009776900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604584800).

1009776900 is an abundant number, since it is smaller than the sum of its proper divisors (2199392700).

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

1009776900 is a wasteful number, since it uses less digits than its factorization.

1009776900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 1009776900 is about 31776.9869559718. The cubic root of 1009776900 is about 1003.2484031180.

The spelling of 1009776900 in words is "one billion, nine million, seven hundred seventy-six thousand, nine hundred".