2991243507 has 8 divisors (see below), whose sum is σ = 4558085376. Its totient is φ = 1709281992.

The previous prime is 2991243491. The next prime is 2991243527. The reversal of 2991243507 is 7053421992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2991243507 - 2⁴ = 2991243491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2991243527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71220063 + ... + 71220104.

It is an arithmetic number, because the mean of its divisors is an integer number (569760672).

Almost surely, 2^2991243507 is an apocalyptic number.

2991243507 is a deficient number, since it is larger than the sum of its proper divisors (1566841869).

2991243507 is a wasteful number, since it uses less digits than its factorization.

2991243507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142440177.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 2991243507 is about 54692.2618566832. The cubic root of 2991243507 is about 1440.8449752426.

The spelling of 2991243507 in words is "two billion, nine hundred ninety-one million, two hundred forty-three thousand, five hundred seven".