1454218561 has 4 divisors (see below), whose sum is σ = 1530756400. Its totient is φ = 1377680724.

The previous prime is 1454218553. The next prime is 1454218639. The reversal of 1454218561 is 1658124541.

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: 1658124541 = 4729 ⋅350629.

It is a cyclic number.

It is not a de Polignac number, because 1454218561 - 2³ = 1454218553 is a prime.

It is a super-2 number, since 2×1454218561² = 4229503246313821442, which contains 22 as substring.

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 1454218561.

It is not an unprimeable number, because it can be changed into a prime (1454218531) 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, 38268891 + ... + 38268928.

It is an arithmetic number, because the mean of its divisors is an integer number (382689100).

Almost surely, 2^1454218561 is an apocalyptic number.

It is an amenable number.

1454218561 is a deficient number, since it is larger than the sum of its proper divisors (76537839).

1454218561 is an equidigital number, since it uses as much as digits as its factorization.

1454218561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76537838.

The product of its digits is 38400, while the sum is 37.

The square root of 1454218561 is about 38134.2177184743. The cubic root of 1454218561 is about 1132.9477845316.

The spelling of 1454218561 in words is "one billion, four hundred fifty-four million, two hundred eighteen thousand, five hundred sixty-one".