1673456656 has 40 divisors (see below), whose sum is σ = 3353785344. Its totient is φ = 808362240.

The previous prime is 1673456651. The next prime is 1673456669. The reversal of 1673456656 is 6566543761.

It is not an unprimeable number, because it can be changed into a prime (1673456651) 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, 55185 + ... + 79951.

Almost surely, 2^1673456656 is an apocalyptic number.

1673456656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1673456656 is an abundant number, since it is smaller than the sum of its proper divisors (1680328688).

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

1673456656 is a wasteful number, since it uses less digits than its factorization.

1673456656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24919 (or 24913 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 49.

The square root of 1673456656 is about 40907.9045662327. The cubic root of 1673456656 is about 1187.2390044472.

It can be divided in two parts, 1673 and 456656, that added together give a square (458329 = 677²).

The spelling of 1673456656 in words is "one billion, six hundred seventy-three million, four hundred fifty-six thousand, six hundred fifty-six".