1106642261 has 4 divisors (see below), whose sum is σ = 1112824800. Its totient is φ = 1100459724.

The previous prime is 1106642239. The next prime is 1106642267. The reversal of 1106642261 is 1622466011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1622466011 = 919 ⋅1765469.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1106642261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106642267) 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, 3091001 + ... + 3091358.

It is an arithmetic number, because the mean of its divisors is an integer number (278206200).

Almost surely, 2^1106642261 is an apocalyptic number.

It is an amenable number.

1106642261 is a deficient number, since it is larger than the sum of its proper divisors (6182539).

1106642261 is an equidigital number, since it uses as much as digits as its factorization.

1106642261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182538.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1106642261 is about 33266.2330449361. The cubic root of 1106642261 is about 1034.3537272466.

The spelling of 1106642261 in words is "one billion, one hundred six million, six hundred forty-two thousand, two hundred sixty-one".