2991973100 has 18 divisors (see below), whose sum is σ = 6492581844. Its totient is φ = 1196789200.

The previous prime is 2991973099. The next prime is 2991973121. The reversal of 2991973100 is 13791992.

It is a super-2 number, since 2×2991973100² = 17903806062247220000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14959766 + ... + 14959965.

Almost surely, 2^2991973100 is an apocalyptic number.

2991973100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2991973100 is an abundant number, since it is smaller than the sum of its proper divisors (3500608744).

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

2991973100 is a wasteful number, since it uses less digits than its factorization.

2991973100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29919745 (or 29919738 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 2991973100 is about 54698.9314338041. The cubic root of 2991973100 is about 1440.9621110257.

The spelling of 2991973100 in words is "two billion, nine hundred ninety-one million, nine hundred seventy-three thousand, one hundred".