1129198572 has 72 divisors (see below), whose sum is σ = 2916101552. Its totient is φ = 368323200.

The previous prime is 1129198541. The next prime is 1129198573. The reversal of 1129198572 is 2758919211.

It is not an unprimeable number, because it can be changed into a prime (1129198573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 462138 + ... + 464574.

Almost surely, 2^1129198572 is an apocalyptic number.

1129198572 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 1129198572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458050776).

1129198572 is an abundant number, since it is smaller than the sum of its proper divisors (1786902980).

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

1129198572 is a wasteful number, since it uses less digits than its factorization.

1129198572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719 (or 2714 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 1129198572 is about 33603.5499910352. The cubic root of 1129198572 is about 1041.3341396229.

The spelling of 1129198572 in words is "one billion, one hundred twenty-nine million, one hundred ninety-eight thousand, five hundred seventy-two".