1105661029 has 4 divisors (see below), whose sum is σ = 1206175680. Its totient is φ = 1005146380.

The previous prime is 1105661027. The next prime is 1105661057. The reversal of 1105661029 is 9201665011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1105661029 - 2¹ = 1105661027 is a prime.

It is a super-2 number, since 2×1105661029² = 2444972622098677682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105661023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50257309 + ... + 50257330.

It is an arithmetic number, because the mean of its divisors is an integer number (301543920).

Almost surely, 2^1105661029 is an apocalyptic number.

It is an amenable number.

1105661029 is a deficient number, since it is larger than the sum of its proper divisors (100514651).

1105661029 is a wasteful number, since it uses less digits than its factorization.

1105661029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100514650.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1105661029 is about 33251.4816060879. The cubic root of 1105661029 is about 1034.0479249911.

The spelling of 1105661029 in words is "one billion, one hundred five million, six hundred sixty-one thousand, twenty-nine".