1009151172 has 72 divisors (see below), whose sum is σ = 2628080000. Its totient is φ = 326265408.

The previous prime is 1009151167. The next prime is 1009151183. The reversal of 1009151172 is 2711519001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 503829 + ... + 505827.

Almost surely, 2^1009151172 is an apocalyptic number.

1009151172 is a gapful number since it is divisible by the number (12) 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 1009151172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314040000).

1009151172 is an abundant number, since it is smaller than the sum of its proper divisors (1618928828).

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

1009151172 is a wasteful number, since it uses less digits than its factorization.

1009151172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The square root of 1009151172 is about 31767.1398145946. The cubic root of 1009151172 is about 1003.0411328026.

The spelling of 1009151172 in words is "one billion, nine million, one hundred fifty-one thousand, one hundred seventy-two".