1671634474 has 4 divisors (see below), whose sum is σ = 2507451714. Its totient is φ = 835817236.

The previous prime is 1671634451. The next prime is 1671634499. The reversal of 1671634474 is 4744361761.

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

It can be written as a sum of positive squares in only one way, i.e., 1625299225 + 46335249 = 40315^2 + 6807^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1671634474.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417908617 + ... + 417908620.

Almost surely, 2^1671634474 is an apocalyptic number.

1671634474 is a deficient number, since it is larger than the sum of its proper divisors (835817240).

1671634474 is an equidigital number, since it uses as much as digits as its factorization.

1671634474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835817239.

The product of its digits is 338688, while the sum is 43.

The square root of 1671634474 is about 40885.6267409465. The cubic root of 1671634474 is about 1186.8079303943.

The spelling of 1671634474 in words is "one billion, six hundred seventy-one million, six hundred thirty-four thousand, four hundred seventy-four".