1634956061 has 4 divisors (see below), whose sum is σ = 1721006400. Its totient is φ = 1548905724.

The previous prime is 1634956051. The next prime is 1634956087. The reversal of 1634956061 is 1606594361.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1634956061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634956051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43025141 + ... + 43025178.

It is an arithmetic number, because the mean of its divisors is an integer number (430251600).

Almost surely, 2^1634956061 is an apocalyptic number.

It is an amenable number.

1634956061 is a deficient number, since it is larger than the sum of its proper divisors (86050339).

1634956061 is an equidigital number, since it uses as much as digits as its factorization.

1634956061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86050338.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 1634956061 is about 40434.5899076521. The cubic root of 1634956061 is about 1178.0634858167.

The spelling of 1634956061 in words is "one billion, six hundred thirty-four million, nine hundred fifty-six thousand, sixty-one".