1452021666 has 16 divisors (see below), whose sum is σ = 2965832064. Its totient is φ = 473709104.

The previous prime is 1452021653. The next prime is 1452021691. The reversal of 1452021666 is 6661202541.

It is a super-3 number, since 3×1452021666³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2574225 + ... + 2574788.

It is an arithmetic number, because the mean of its divisors is an integer number (185364504).

Almost surely, 2^1452021666 is an apocalyptic number.

1452021666 is an abundant number, since it is smaller than the sum of its proper divisors (1513810398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1452021666 is a wasteful number, since it uses less digits than its factorization.

1452021666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149065.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1452021666 is about 38105.4020579760. The cubic root of 1452021666 is about 1132.3769804339.

The spelling of 1452021666 in words is "one billion, four hundred fifty-two million, twenty-one thousand, six hundred sixty-six".