2921994591 has 32 divisors (see below), whose sum is σ = 4140564480. Its totient is φ = 1827784800.

The previous prime is 2921994587. The next prime is 2921994613. The reversal of 2921994591 is 1954991292.

It is not a de Polignac number, because 2921994591 - 2² = 2921994587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921994541) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3385426 + ... + 3386288.

It is an arithmetic number, because the mean of its divisors is an integer number (129392640).

Almost surely, 2^2921994591 is an apocalyptic number.

2921994591 is a deficient number, since it is larger than the sum of its proper divisors (1218569889).

2921994591 is a wasteful number, since it uses less digits than its factorization.

2921994591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387.

The product of its digits is 524880, while the sum is 51.

The square root of 2921994591 is about 54055.4769750485. The cubic root of 2921994591 is about 1429.6392705116.

The spelling of 2921994591 in words is "two billion, nine hundred twenty-one million, nine hundred ninety-four thousand, five hundred ninety-one".