2946745521 has 32 divisors (see below), whose sum is σ = 4455107840. Its totient is φ = 1924560000.

The previous prime is 2946745493. The next prime is 2946745531. The reversal of 2946745521 is 1255476492.

2946745521 is a `hidden beast` number, since 2 + 94 + 6 + 7 + 4 + 552 + 1 = 666.

It is not a de Polignac number, because 2946745521 - 2⁶ = 2946745457 is a prime.

It is a super-2 number, since 2×2946745521² = 17366618331067122882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2946745531) 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, 292671 + ... + 302571.

It is an arithmetic number, because the mean of its divisors is an integer number (139222120).

Almost surely, 2^2946745521 is an apocalyptic number.

It is an amenable number.

2946745521 is a deficient number, since it is larger than the sum of its proper divisors (1508362319).

2946745521 is a wasteful number, since it uses less digits than its factorization.

2946745521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10134 (or 10128 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 2946745521 is about 54283.9342807796. The cubic root of 2946745521 is about 1433.6645413737.

The spelling of 2946745521 in words is "two billion, nine hundred forty-six million, seven hundred forty-five thousand, five hundred twenty-one".