3693863778 has 32 divisors (see below), whose sum is σ = 8072004672. Its totient is φ = 1117593600.

The previous prime is 3693863773. The next prime is 3693863801. The reversal of 3693863778 is 8773683963.

It is a super-2 number, since 2×3693863778² = 27289259220840866568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3693863773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351 + ... + 85962.

It is an arithmetic number, because the mean of its divisors is an integer number (252250146).

Almost surely, 2^3693863778 is an apocalyptic number.

3693863778 is an abundant number, since it is smaller than the sum of its proper divisors (4378140894).

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

3693863778 is a wasteful number, since it uses less digits than its factorization.

3693863778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87970.

The product of its digits is 27433728, while the sum is 60.

The square root of 3693863778 is about 60777.1649388156. The cubic root of 3693863778 is about 1545.8248759705.

The spelling of 3693863778 in words is "three billion, six hundred ninety-three million, eight hundred sixty-three thousand, seven hundred seventy-eight".