2991181125 has 16 divisors (see below), whose sum is σ = 4977326016. Its totient is φ = 1595296400.

The previous prime is 2991181099. The next prime is 2991181169. The reversal of 2991181125 is 5211811992.

It is a happy number.

It is not a de Polignac number, because 2991181125 - 2¹¹ = 2991179077 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3987867 + ... + 3988616.

It is an arithmetic number, because the mean of its divisors is an integer number (311082876).

Almost surely, 2^2991181125 is an apocalyptic number.

2991181125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2991181125 is a deficient number, since it is larger than the sum of its proper divisors (1986144891).

2991181125 is an equidigital number, since it uses as much as digits as its factorization.

2991181125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976501 (or 7976491 counting only the distinct ones).

The product of its digits is 12960, while the sum is 39.

The square root of 2991181125 is about 54691.6915536537. The cubic root of 2991181125 is about 1440.8349589606.

The spelling of 2991181125 in words is "two billion, nine hundred ninety-one million, one hundred eighty-one thousand, one hundred twenty-five".