1453656666 has 128 divisors (see below), whose sum is σ = 3748276224. Its totient is φ = 364849920.

The previous prime is 1453656661. The next prime is 1453656683. The reversal of 1453656666 is 6666563541.

It is a super-2 number, since 2×1453656666² = 4226235405212471112, which contains 22 as substring.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1453656661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4734885 + ... + 4735191.

It is an arithmetic number, because the mean of its divisors is an integer number (29283408).

Almost surely, 2^1453656666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1453656666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874138112).

1453656666 is an abundant number, since it is smaller than the sum of its proper divisors (2294619558).

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

1453656666 is a wasteful number, since it uses less digits than its factorization.

1453656666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its digits is 2332800, while the sum is 48.

The square root of 1453656666 is about 38126.8496731634. The cubic root of 1453656666 is about 1132.8018459679.

The spelling of 1453656666 in words is "one billion, four hundred fifty-three million, six hundred fifty-six thousand, six hundred sixty-six".