2001372291 has 24 divisors (see below), whose sum is σ = 2973366240. Its totient is φ = 1296279936.

The previous prime is 2001372251. The next prime is 2001372341. The reversal of 2001372291 is 1922731002.

2001372291 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 372 + 291 = 666.

It is not a de Polignac number, because 2001372291 - 2¹⁷ = 2001241219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001372251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243375 + ... + 251463.

It is an arithmetic number, because the mean of its divisors is an integer number (123890260).

Almost surely, 2^2001372291 is an apocalyptic number.

2001372291 is a deficient number, since it is larger than the sum of its proper divisors (971993949).

2001372291 is a wasteful number, since it uses less digits than its factorization.

2001372291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875 (or 8872 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2001372291 is about 44736.6995988752. The cubic root of 2001372291 is about 1260.2091470656.

The spelling of 2001372291 in words is "two billion, one million, three hundred seventy-two thousand, two hundred ninety-one".