3685402380 has 48 divisors (see below), whose sum is σ = 11257231104. Its totient is φ = 893430720.

The previous prime is 3685402367. The next prime is 3685402381. The reversal of 3685402380 is 832045863.

It is not an unprimeable number, because it can be changed into a prime (3685402381) 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, 2791312 + ... + 2792631.

It is an arithmetic number, because the mean of its divisors is an integer number (234525648).

Almost surely, 2^3685402380 is an apocalyptic number.

3685402380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3685402380 is an abundant number, since it is smaller than the sum of its proper divisors (7571828724).

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

3685402380 is a wasteful number, since it uses less digits than its factorization.

3685402380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583966 (or 5583964 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 3685402380 is about 60707.5150207946. The cubic root of 3685402380 is about 1544.6436521717.

The spelling of 3685402380 in words is "three billion, six hundred eighty-five million, four hundred two thousand, three hundred eighty".