2921186987 has 2 divisors, whose sum is σ = 2921186988. Its totient is φ = 2921186986.

The previous prime is 2921186953. The next prime is 2921187067. The reversal of 2921186987 is 7896811292.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2921186987 - 2⁸ = 2921186731 is a prime.

It is not a weakly prime, because it can be changed into another prime (2921188987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460593493 + 1460593494.

It is an arithmetic number, because the mean of its divisors is an integer number (1460593494).

Almost surely, 2^2921186987 is an apocalyptic number.

2921186987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2921186987 is an equidigital number, since it uses as much as digits as its factorization.

2921186987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 53.

The square root of 2921186987 is about 54048.0063184573. The cubic root of 2921186987 is about 1429.5075467016.

The spelling of 2921186987 in words is "two billion, nine hundred twenty-one million, one hundred eighty-six thousand, nine hundred eighty-seven".