2991153876 has 48 divisors (see below), whose sum is σ = 7427145600. Its totient is φ = 933672960.

The previous prime is 2991153871. The next prime is 2991153883. The reversal of 2991153876 is 6783511992.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991153871) 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, 3756 + ... + 77436.

It is an arithmetic number, because the mean of its divisors is an integer number (154732200).

Almost surely, 2^2991153876 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 2991153876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3713572800).

2991153876 is an abundant number, since it is smaller than the sum of its proper divisors (4435991724).

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

2991153876 is a wasteful number, since it uses less digits than its factorization.

2991153876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73904 (or 73902 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 2991153876 is about 54691.4424384656. The cubic root of 2991153876 is about 1440.8305837178.

The spelling of 2991153876 in words is "two billion, nine hundred ninety-one million, one hundred fifty-three thousand, eight hundred seventy-six".