1671708634 has 16 divisors (see below), whose sum is σ = 2659699368. Its totient is φ = 785313792.

The previous prime is 1671708631. The next prime is 1671708691. The reversal of 1671708634 is 4368071761.

It can be written as a sum of positive squares in 4 ways, for example, as 1660318009 + 11390625 = 40747^2 + 3375^2 .

It is not an unprimeable number, because it can be changed into a prime (1671708631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22989 + ... + 62224.

Almost surely, 2^1671708634 is an apocalyptic number.

1671708634 is a deficient number, since it is larger than the sum of its proper divisors (987990734).

1671708634 is a wasteful number, since it uses less digits than its factorization.

1671708634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85809.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1671708634 is about 40886.5336510690. The cubic root of 1671708634 is about 1186.8254805577.

The spelling of 1671708634 in words is "one billion, six hundred seventy-one million, seven hundred eight thousand, six hundred thirty-four".