1485537631 has 4 divisors (see below), whose sum is σ = 1485619072. Its totient is φ = 1485456192.

The previous prime is 1485537617. The next prime is 1485537659. The reversal of 1485537631 is 1367355841.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1367355841 = 109 ⋅12544549.

It is a cyclic number.

It is not a de Polignac number, because 1485537631 - 2¹³ = 1485529439 is a prime.

It is a super-2 number, since 2×1485537631² = 4413644106234184322, 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 (1485537671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655 + ... + 54511.

It is an arithmetic number, because the mean of its divisors is an integer number (371404768).

Almost surely, 2^1485537631 is an apocalyptic number.

1485537631 is a deficient number, since it is larger than the sum of its proper divisors (81441).

1485537631 is an equidigital number, since it uses as much as digits as its factorization.

1485537631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81440.

The product of its digits is 302400, while the sum is 43.

The square root of 1485537631 is about 38542.6728574965. The cubic root of 1485537631 is about 1141.0234041168.

The spelling of 1485537631 in words is "one billion, four hundred eighty-five million, five hundred thirty-seven thousand, six hundred thirty-one".