1011199488 has 160 divisors (see below), whose sum is σ = 2938874400. Its totient is φ = 307101696.

The previous prime is 1011199487. The next prime is 1011199499. The reversal of 1011199488 is 8849911101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011199487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776868 + ... + 1777436.

It is an arithmetic number, because the mean of its divisors is an integer number (18367965).

Almost surely, 2^1011199488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011199488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469437200).

1011199488 is an abundant number, since it is smaller than the sum of its proper divisors (1927674912).

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

1011199488 is an equidigital number, since it uses as much as digits as its factorization.

1011199488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 42.

The square root of 1011199488 is about 31799.3630124882. The cubic root of 1011199488 is about 1003.7193122331.

The spelling of 1011199488 in words is "one billion, eleven million, one hundred ninety-nine thousand, four hundred eighty-eight".