2491940160 has 224 divisors, whose sum is σ = 8825788800. Its totient is φ = 661893120.

The previous prime is 2491940149. The next prime is 2491940161. The reversal of 2491940160 is 610491942.

It is a happy number.

2491940160 is a `hidden beast` number, since 2 + 491 + 9 + 4 + 0 + 160 = 666.

It is a super-2 number, since 2×2491940160² = 12419531522041651200, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491940161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3274180 + ... + 3274940.

Almost surely, 2^2491940160 is an apocalyptic number.

2491940160 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 2491940160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4412894400).

2491940160 is an abundant number, since it is smaller than the sum of its proper divisors (6333848640).

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

2491940160 is a wasteful number, since it uses less digits than its factorization.

2491940160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1150 counting only the distinct ones).

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

The square root of 2491940160 is about 49919.3365340526. The cubic root of 2491940160 is about 1355.7487199822.

The spelling of 2491940160 in words is "two billion, four hundred ninety-one million, nine hundred forty thousand, one hundred sixty".