1248188161 has 16 divisors (see below), whose sum is σ = 1465406208. Its totient is φ = 1050451200.

The previous prime is 1248188099. The next prime is 1248188171. The reversal of 1248188161 is 1618818421.

1248188161 = 2490² + 2491² + ... + 2676².

It is a cyclic number.

It is not a de Polignac number, because 1248188161 - 2¹⁵ = 1248155393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248188171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43305 + ... + 66118.

It is an arithmetic number, because the mean of its divisors is an integer number (91587888).

Almost surely, 2^1248188161 is an apocalyptic number.

1248188161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1248188161 is a deficient number, since it is larger than the sum of its proper divisors (217218047).

1248188161 is a wasteful number, since it uses less digits than its factorization.

1248188161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109512.

The product of its digits is 24576, while the sum is 40.

The square root of 1248188161 is about 35329.7064946767. The cubic root of 1248188161 is about 1076.6966281742.

The spelling of 1248188161 in words is "one billion, two hundred forty-eight million, one hundred eighty-eight thousand, one hundred sixty-one".