7949461636 has 6 divisors (see below), whose sum is σ = 13911557870. Its totient is φ = 3974730816.

The previous prime is 7949461621. The next prime is 7949461649. The reversal of 7949461636 is 6361649497.

It can be written as a sum of positive squares in only one way, i.e., 5703270400 + 2246191236 = 75520^2 + 47394^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993682701 + ... + 993682708.

Almost surely, 2^7949461636 is an apocalyptic number.

It is an amenable number.

7949461636 is a deficient number, since it is larger than the sum of its proper divisors (5962096234).

7949461636 is a wasteful number, since it uses less digits than its factorization.

7949461636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987365413 (or 1987365411 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 55.

The square root of 7949461636 is about 89159.7534541230. The cubic root of 7949461636 is about 1995.7795699162.

The spelling of 7949461636 in words is "seven billion, nine hundred forty-nine million, four hundred sixty-one thousand, six hundred thirty-six".