1009787472 has 70 divisors (see below), whose sum is σ = 2933386842. Its totient is φ = 336591936.

The previous prime is 1009787417. The next prime is 1009787501. The reversal of 1009787472 is 2747879001.

It is a happy number.

1009787472 is a `hidden beast` number, since 10 + 0 + 97 + 87 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 660695616 + 349091856 = 25704^2 + 18684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 31623 + ... + 54950.

Almost surely, 2^1009787472 is an apocalyptic number.

1009787472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1009787472 is an abundant number, since it is smaller than the sum of its proper divisors (1923599370).

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

1009787472 is an frugal number, since it uses more digits than its factorization.

1009787472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86599 (or 86578 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 1009787472 is about 31777.1533023334. The cubic root of 1009787472 is about 1003.2519043221.

The spelling of 1009787472 in words is "one billion, nine million, seven hundred eighty-seven thousand, four hundred seventy-two".