1631260447 has 12 divisors (see below), whose sum is σ = 1754139240. Its totient is φ = 1516228272.

The previous prime is 1631260417. The next prime is 1631260451. The reversal of 1631260447 is 7440621361.

It is a de Polignac number, because none of the positive numbers 2^k-1631260447 is a prime.

It is a super-2 number, since 2×1631260447² = 5322021291893279618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631260417) 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 11 ways as a sum of consecutive naturals, for example, 23497 + ... + 61762.

It is an arithmetic number, because the mean of its divisors is an integer number (146178270).

Almost surely, 2^1631260447 is an apocalyptic number.

1631260447 is a deficient number, since it is larger than the sum of its proper divisors (122878793).

1631260447 is an equidigital number, since it uses as much as digits as its factorization.

1631260447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85350 (or 85331 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1631260447 is about 40388.8653839149. The cubic root of 1631260447 is about 1177.1751943924.

The spelling of 1631260447 in words is "one billion, six hundred thirty-one million, two hundred sixty thousand, four hundred forty-seven".