1631479449601 has 4 divisors (see below), whose sum is σ = 1631492149252. Its totient is φ = 1631466749952.

The previous prime is 1631479449533. The next prime is 1631479449629. The reversal of 1631479449601 is 1069449741361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 883366895376 + 748112554225 = 939876^2 + 864935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631479449601 - 2¹¹ = 1631479447553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631479449671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6155136 + ... + 6414721.

It is an arithmetic number, because the mean of its divisors is an integer number (407873037313).

Almost surely, 2^{1631479449601} is an apocalyptic number.

It is an amenable number.

1631479449601 is a deficient number, since it is larger than the sum of its proper divisors (12699651).

1631479449601 is a wasteful number, since it uses less digits than its factorization.

1631479449601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12699650.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 1631479449601 in words is "one trillion, six hundred thirty-one billion, four hundred seventy-nine million, four hundred forty-nine thousand, six hundred one".