1455827661 has 10 divisors (see below), whose sum is σ = 2174755022. Its totient is φ = 970551720.

The previous prime is 1455827621. The next prime is 1455827663. The reversal of 1455827661 is 1667285541.

1455827661 is a `hidden beast` number, since 1 + 4 + 5 + 582 + 7 + 6 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1351665225 + 104162436 = 36765^2 + 10206^2 .

It is not a de Polignac number, because 1455827661 - 2¹⁴ = 1455811277 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 (1455827663) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8986510 + ... + 8986671.

Almost surely, 2^1455827661 is an apocalyptic number.

It is an amenable number.

1455827661 is a deficient number, since it is larger than the sum of its proper divisors (718927361).

1455827661 is an equidigital number, since it uses as much as digits as its factorization.

1455827661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17973193 (or 17973184 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 1455827661 is about 38155.3097353435. The cubic root of 1455827661 is about 1133.3655012688.

The spelling of 1455827661 in words is "one billion, four hundred fifty-five million, eight hundred twenty-seven thousand, six hundred sixty-one".