4949317657 has 16 divisors (see below), whose sum is σ = 5347584000. Its totient is φ = 4565840400.

The previous prime is 4949317651. The next prime is 4949317663. The reversal of 4949317657 is 7567139494.

It is an interprime number because it is at equal distance from previous prime (4949317651) and next prime (4949317663).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4949317657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4949317598 and 4949317607.

It is not an unprimeable number, because it can be changed into a prime (4949317651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163782 + ... + 191632.

It is an arithmetic number, because the mean of its divisors is an integer number (334224000).

Almost surely, 2^4949317657 is an apocalyptic number.

4949317657 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

4949317657 is a deficient number, since it is larger than the sum of its proper divisors (398266343).

4949317657 is a wasteful number, since it uses less digits than its factorization.

4949317657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28116.

The product of its digits is 5715360, while the sum is 55.

The square root of 4949317657 is about 70351.3870296812. The cubic root of 4949317657 is about 1704.1786083188.

The spelling of 4949317657 in words is "four billion, nine hundred forty-nine million, three hundred seventeen thousand, six hundred fifty-seven".