2291181480 has 384 divisors, whose sum is σ = 8889753600. Its totient is φ = 500774400.

The previous prime is 2291181479. The next prime is 2291181491. The reversal of 2291181480 is 841811922.

2291181480 = T₄₅₅ + T₄₅₆ + ... + T₂₄₀₀.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10858575 + ... + 10858785.

It is an arithmetic number, because the mean of its divisors is an integer number (23150400).

Almost surely, 2^2291181480 is an apocalyptic number.

2291181480 is a gapful number since it is divisible by the number (20) 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 2291181480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4444876800).

2291181480 is an abundant number, since it is smaller than the sum of its proper divisors (6598572120).

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

2291181480 is a wasteful number, since it uses less digits than its factorization.

2291181480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 2291181480 is about 47866.2875101046. The cubic root of 2291181480 is about 1318.3169320488.

The spelling of 2291181480 in words is "two billion, two hundred ninety-one million, one hundred eighty-one thousand, four hundred eighty".