3678861642 has 64 divisors (see below), whose sum is σ = 8095852800. Its totient is φ = 1109283840.

The previous prime is 3678861631. The next prime is 3678861701. The reversal of 3678861642 is 2461688763.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 674667 + ... + 680097.

It is an arithmetic number, because the mean of its divisors is an integer number (126497700).

Almost surely, 2^3678861642 is an apocalyptic number.

3678861642 is an abundant number, since it is smaller than the sum of its proper divisors (4416991158).

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

3678861642 is a wasteful number, since it uses less digits than its factorization.

3678861642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its digits is 2322432, while the sum is 51.

The square root of 3678861642 is about 60653.6201887406. The cubic root of 3678861642 is about 1543.7293158085.

The spelling of 3678861642 in words is "three billion, six hundred seventy-eight million, eight hundred sixty-one thousand, six hundred forty-two".