1632290661 has 12 divisors (see below), whose sum is σ = 2402239788. Its totient is φ = 1067661504.

The previous prime is 1632290651. The next prime is 1632290669. The reversal of 1632290661 is 1660922361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1467656100 + 164634561 = 38310^2 + 12831^2 .

It is not a de Polignac number, because 1632290661 - 2⁵ = 1632290629 is a prime.

It is a super-5 number, since 5×1632290661⁵ (a number of 47 digits) contains 55555 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1632290669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1710520 + ... + 1711473.

It is an arithmetic number, because the mean of its divisors is an integer number (200186649).

Almost surely, 2^1632290661 is an apocalyptic number.

It is an amenable number.

1632290661 is a deficient number, since it is larger than the sum of its proper divisors (769949127).

1632290661 is a wasteful number, since it uses less digits than its factorization.

1632290661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422052 (or 3422049 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1632290661 is about 40401.6170592218. The cubic root of 1632290661 is about 1177.4229551873.

The spelling of 1632290661 in words is "one billion, six hundred thirty-two million, two hundred ninety thousand, six hundred sixty-one".