1126665451 has 4 divisors (see below), whose sum is σ = 1132890304. Its totient is φ = 1120440600.

The previous prime is 1126665433. The next prime is 1126665461. The reversal of 1126665451 is 1545666211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1545666211 = 5507 ⋅280673.

It is a cyclic number.

It is not a de Polignac number, because 1126665451 - 2¹¹ = 1126663403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1126665451.

It is not an unprimeable number, because it can be changed into a prime (1126665461) 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, 3112155 + ... + 3112516.

It is an arithmetic number, because the mean of its divisors is an integer number (283222576).

Almost surely, 2^1126665451 is an apocalyptic number.

1126665451 is a deficient number, since it is larger than the sum of its proper divisors (6224853).

1126665451 is an equidigital number, since it uses as much as digits as its factorization.

1126665451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224852.

The product of its digits is 43200, while the sum is 37.

The square root of 1126665451 is about 33565.8375584462. The cubic root of 1126665451 is about 1040.5548847972.

The spelling of 1126665451 in words is "one billion, one hundred twenty-six million, six hundred sixty-five thousand, four hundred fifty-one".