2449821969 has 32 divisors (see below), whose sum is σ = 4209776640. Its totient is φ = 1378997136.

The previous prime is 2449821967. The next prime is 2449821973. The reversal of 2449821969 is 9691289442.

2449821969 is a `hidden beast` number, since 2 + 449 + 8 + 2 + 196 + 9 = 666.

It is not a de Polignac number, because 2449821969 - 2¹ = 2449821967 is a prime.

It is a super-2 number, since 2×2449821969² = 12003255359590073922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2449821967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84069 + ... + 109394.

It is an arithmetic number, because the mean of its divisors is an integer number (131555520).

Almost surely, 2^2449821969 is an apocalyptic number.

It is an amenable number.

2449821969 is a deficient number, since it is larger than the sum of its proper divisors (1759954671).

2449821969 is a wasteful number, since it uses less digits than its factorization.

2449821969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193546 (or 193540 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 2449821969 is about 49495.6762657103. The cubic root of 2449821969 is about 1348.0670955532.

The spelling of 2449821969 in words is "two billion, four hundred forty-nine million, eight hundred twenty-one thousand, nine hundred sixty-nine".