1867680642 has 16 divisors (see below), whose sum is σ = 3814837632. Its totient is φ = 609314160.

The previous prime is 1867680641. The next prime is 1867680697. The reversal of 1867680642 is 2460867681.

It is a junction number, because it is equal to n+sod(n) for n = 1867680591 and 1867680600.

It is not an unprimeable number, because it can be changed into a prime (1867680641) 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, 3311209 + ... + 3311772.

It is an arithmetic number, because the mean of its divisors is an integer number (238427352).

Almost surely, 2^1867680642 is an apocalyptic number.

1867680642 is an abundant number, since it is smaller than the sum of its proper divisors (1947156990).

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

1867680642 is a wasteful number, since it uses less digits than its factorization.

1867680642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623033.

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1867680642 is about 43216.6708805757. The cubic root of 1867680642 is about 1231.4994035144.

The spelling of 1867680642 in words is "one billion, eight hundred sixty-seven million, six hundred eighty thousand, six hundred forty-two".