1678223892 has 24 divisors (see below), whose sum is σ = 3918392352. Its totient is φ = 559045600.

The previous prime is 1678223879. The next prime is 1678223893. The reversal of 1678223892 is 2983228761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678223893) 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, 25659 + ... + 63362.

It is an arithmetic number, because the mean of its divisors is an integer number (163266348).

Almost surely, 2^1678223892 is an apocalyptic number.

1678223892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1678223892 is an abundant number, since it is smaller than the sum of its proper divisors (2240168460).

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

1678223892 is a wasteful number, since it uses less digits than its factorization.

1678223892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90599 (or 90597 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 1678223892 is about 40966.1310352833. The cubic root of 1678223892 is about 1188.3653123841.

The spelling of 1678223892 in words is "one billion, six hundred seventy-eight million, two hundred twenty-three thousand, eight hundred ninety-two".