1671631386 has 32 divisors (see below), whose sum is σ = 3554083008. Its totient is φ = 522336000.

The previous prime is 1671631249. The next prime is 1671631387. The reversal of 1671631386 is 6831361761.

It is not an unprimeable number, because it can be changed into a prime (1671631387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7045 + ... + 58248.

It is an arithmetic number, because the mean of its divisors is an integer number (111065094).

Almost surely, 2^1671631386 is an apocalyptic number.

1671631386 is an abundant number, since it is smaller than the sum of its proper divisors (1882451622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1671631386 is a wasteful number, since it uses less digits than its factorization.

1671631386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65566.

The product of its digits is 108864, while the sum is 42.

The square root of 1671631386 is about 40885.5889770467. The cubic root of 1671631386 is about 1186.8071995995.

The spelling of 1671631386 in words is "one billion, six hundred seventy-one million, six hundred thirty-one thousand, three hundred eighty-six".