1452513661 has 4 divisors (see below), whose sum is σ = 1459397824. Its totient is φ = 1445629500.

The previous prime is 1452513637. The next prime is 1452513679. The reversal of 1452513661 is 1663152541.

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: 1663152541 = 5903 ⋅281747.

It is a cyclic number.

It is not a de Polignac number, because 1452513661 - 2¹³ = 1452505469 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 (1452513961) 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, 3441765 + ... + 3442186.

It is an arithmetic number, because the mean of its divisors is an integer number (364849456).

Almost surely, 2^1452513661 is an apocalyptic number.

It is an amenable number.

1452513661 is a deficient number, since it is larger than the sum of its proper divisors (6884163).

1452513661 is an equidigital number, since it uses as much as digits as its factorization.

1452513661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884162.

The product of its digits is 21600, while the sum is 34.

The square root of 1452513661 is about 38111.8572231792. The cubic root of 1452513661 is about 1132.5048621116.

The spelling of 1452513661 in words is "one billion, four hundred fifty-two million, five hundred thirteen thousand, six hundred sixty-one".