2921847394819 has 12 divisors (see below), whose sum is σ = 3093071010400. Its totient is φ = 2759433163344.

The previous prime is 2921847394787. The next prime is 2921847394853. The reversal of 2921847394819 is 9184937481292.

It is not a de Polignac number, because 2921847394819 - 2⁵ = 2921847394787 is a prime.

It is a super-2 number, since 2×2921847394819² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2921847394619) 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 11 ways as a sum of consecutive naturals, for example, 34916064 + ... + 34999645.

Almost surely, 2^{2921847394819} is an apocalyptic number.

2921847394819 is a deficient number, since it is larger than the sum of its proper divisors (171223615581).

2921847394819 is an equidigital number, since it uses as much as digits as its factorization.

2921847394819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69915834 (or 69915811 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 67.

The spelling of 2921847394819 in words is "two trillion, nine hundred twenty-one billion, eight hundred forty-seven million, three hundred ninety-four thousand, eight hundred nineteen".