1670463988 has 6 divisors (see below), whose sum is σ = 2923311986. Its totient is φ = 835231992.

The previous prime is 1670463967. The next prime is 1670464027. The reversal of 1670463988 is 8893640761.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1485177444 + 185286544 = 38538^2 + 13612^2 .

It is a super-3 number, since 3×1670463988³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208807995 + ... + 208808002.

Almost surely, 2^1670463988 is an apocalyptic number.

It is an amenable number.

1670463988 is a deficient number, since it is larger than the sum of its proper divisors (1252847998).

1670463988 is a wasteful number, since it uses less digits than its factorization.

1670463988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417616001 (or 417615999 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1670463988 is about 40871.3100842143. The cubic root of 1670463988 is about 1186.5308629606.

The spelling of 1670463988 in words is "one billion, six hundred seventy million, four hundred sixty-three thousand, nine hundred eighty-eight".