1103661273 has 32 divisors (see below), whose sum is σ = 1732469760. Its totient is φ = 616127040.

The previous prime is 1103661259. The next prime is 1103661283. The reversal of 1103661273 is 3721663011.

It is not a de Polignac number, because 1103661273 - 2¹³ = 1103653081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1103661273.

It is not an unprimeable number, because it can be changed into a prime (1103661253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221908 + ... + 226826.

It is an arithmetic number, because the mean of its divisors is an integer number (54139680).

Almost surely, 2^1103661273 is an apocalyptic number.

1103661273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1103661273 is a deficient number, since it is larger than the sum of its proper divisors (628808487).

1103661273 is a wasteful number, since it uses less digits than its factorization.

1103661273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1103661273 is about 33221.3978182737. The cubic root of 1103661273 is about 1033.4241378291.

The spelling of 1103661273 in words is "one billion, one hundred three million, six hundred sixty-one thousand, two hundred seventy-three".