3805690537902 has 128 divisors (see below), whose sum is σ = 8563583508480. Its totient is φ = 1117528151040.

The previous prime is 3805690537897. The next prime is 3805690537921. The reversal of 3805690537902 is 2097350965083.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 795667803 + ... + 795672585.

It is an arithmetic number, because the mean of its divisors is an integer number (66902996160).

Almost surely, 2^{3805690537902} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3805690537902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4281791754240).

3805690537902 is an abundant number, since it is smaller than the sum of its proper divisors (4757892970578).

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

3805690537902 is a wasteful number, since it uses less digits than its factorization.

3805690537902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6998.

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 3805690537902 in words is "three trillion, eight hundred five billion, six hundred ninety million, five hundred thirty-seven thousand, nine hundred two".