3867389698624 has 21 divisors (see below), whose sum is σ = 7674382652601. Its totient is φ = 1933686983040.

The previous prime is 3867389698607. The next prime is 3867389698639. The reversal of 3867389698624 is 4268969837683.

The square root of 3867389698624 is 1966568.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 432742940224 + 3434646758400 = 657832^2 + 1853280^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15609634 + ... + 15855454.

It is an arithmetic number, because the mean of its divisors is an integer number (365446792981).

Almost surely, 2^{3867389698624} is an apocalyptic number.

3867389698624 is the 1966568-th square number.

It is an amenable number.

3867389698624 is a deficient number, since it is larger than the sum of its proper divisors (3806992953977).

3867389698624 is an frugal number, since it uses more digits than its factorization.

3867389698624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491654 (or 245823 counting only the distinct ones).

The product of its digits is 4514807808, while the sum is 79.

The spelling of 3867389698624 in words is "three trillion, eight hundred sixty-seven billion, three hundred eighty-nine million, six hundred ninety-eight thousand, six hundred twenty-four".