4951796161 has 9 divisors (see below), whose sum is σ = 5362994889. Its totient is φ = 4570044336.

The previous prime is 4951796147. The next prime is 4951796209. The reversal of 4951796161 is 1616971594.

The square root of 4951796161 is 70369.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2009818561 + 2941977600 = 44831^2 + 54240^2 .

It is not a de Polignac number, because 4951796161 - 2¹⁹ = 4951271873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4951796111) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 912091 + ... + 917503.

It is an arithmetic number, because the mean of its divisors is an integer number (595888321).

Almost surely, 2^4951796161 is an apocalyptic number.

4951796161 is the 70369-th square number.

4951796161 is the 35185-th centered octagonal number.

It is an amenable number.

4951796161 is a deficient number, since it is larger than the sum of its proper divisors (411198728).

4951796161 is an frugal number, since it uses more digits than its factorization.

4951796161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10852 (or 5426 counting only the distinct ones).

The product of its digits is 408240, while the sum is 49.

The cubic root of 4951796161 is about 1704.4630319454.

Multiplying 4951796161 by its sum of digits (49), we get a square (242638011889 = 492583²).

The spelling of 4951796161 in words is "four billion, nine hundred fifty-one million, seven hundred ninety-six thousand, one hundred sixty-one".