3691431180870 has 16 divisors (see below), whose sum is σ = 8859434834160. Its totient is φ = 984381648224.

The previous prime is 3691431180851. The next prime is 3691431180911. The reversal of 3691431180870 is 780811341963.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61523852985 + ... + 61523853044.

It is an arithmetic number, because the mean of its divisors is an integer number (553714677135).

Almost surely, 2^{3691431180870} is an apocalyptic number.

3691431180870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3691431180870 is an abundant number, since it is smaller than the sum of its proper divisors (5168003653290).

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

3691431180870 is a wasteful number, since it uses less digits than its factorization.

3691431180870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123047706039.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 3691431180870 in words is "three trillion, six hundred ninety-one billion, four hundred thirty-one million, one hundred eighty thousand, eight hundred seventy".