4951636906 has 4 divisors (see below), whose sum is σ = 7427455362. Its totient is φ = 2475818452.

The previous prime is 4951636897. The next prime is 4951636927. The reversal of 4951636906 is 6096361594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4818442225 + 133194681 = 69415^2 + 11541^2 .

It is a super-2 number, since 2×4951636906² = 49037416097722505672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4951636906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237909225 + ... + 1237909228.

Almost surely, 2^4951636906 is an apocalyptic number.

4951636906 is a deficient number, since it is larger than the sum of its proper divisors (2475818456).

4951636906 is a wasteful number, since it uses less digits than its factorization.

4951636906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475818455.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 4951636906 is about 70367.8684201817. The cubic root of 4951636906 is about 1704.4447593051. Note that the first 3 decimals are identical.

The spelling of 4951636906 in words is "four billion, nine hundred fifty-one million, six hundred thirty-six thousand, nine hundred six".