1491222096 has 240 divisors, whose sum is σ = 5363198400. Its totient is φ = 393216768.

The previous prime is 1491222053. The next prime is 1491222127. The reversal of 1491222096 is 6902221941.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1491222096.

It is a congruent number.

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, 272475 + ... + 277893.

It is an arithmetic number, because the mean of its divisors is an integer number (22346660).

Almost surely, 2^1491222096 is an apocalyptic number.

1491222096 is a gapful number since it is divisible by the number (16) 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 1491222096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2681599200).

1491222096 is an abundant number, since it is smaller than the sum of its proper divisors (3871976304).

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

1491222096 is a wasteful number, since it uses less digits than its factorization.

1491222096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5444 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1491222096 is about 38616.3449332015. The cubic root of 1491222096 is about 1142.4769411846.

The spelling of 1491222096 in words is "one billion, four hundred ninety-one million, two hundred twenty-two thousand, ninety-six".