1678431580 has 48 divisors (see below), whose sum is σ = 4033935360. Its totient is φ = 574648128.

The previous prime is 1678431571. The next prime is 1678431581. The reversal of 1678431580 is 851348761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678431581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95349 + ... + 111571.

It is an arithmetic number, because the mean of its divisors is an integer number (84040320).

Almost surely, 2^1678431580 is an apocalyptic number.

1678431580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1678431580 is an abundant number, since it is smaller than the sum of its proper divisors (2355503780).

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

1678431580 is a wasteful number, since it uses less digits than its factorization.

1678431580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16978 (or 16976 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1678431580 is about 40968.6658313399. The cubic root of 1678431580 is about 1188.4143322707.

The spelling of 1678431580 in words is "one billion, six hundred seventy-eight million, four hundred thirty-one thousand, five hundred eighty".