1678432077 has 16 divisors (see below), whose sum is σ = 2841790080. Its totient is φ = 959103936.

The previous prime is 1678432057. The next prime is 1678432079. The reversal of 1678432077 is 7702348761.

It is not a de Polignac number, because 1678432077 - 2¹² = 1678427981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678432079) 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, 4440108 + ... + 4440485.

It is an arithmetic number, because the mean of its divisors is an integer number (177611880).

Almost surely, 2^1678432077 is an apocalyptic number.

It is an amenable number.

1678432077 is a deficient number, since it is larger than the sum of its proper divisors (1163358003).

1678432077 is an equidigital number, since it uses as much as digits as its factorization.

1678432077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880609 (or 8880603 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 1678432077 is about 40968.6718969507. The cubic root of 1678432077 is about 1188.4144495710.

The spelling of 1678432077 in words is "one billion, six hundred seventy-eight million, four hundred thirty-two thousand, seventy-seven".