3898278687 has 32 divisors (see below), whose sum is σ = 5711143680. Its totient is φ = 2354204160.

The previous prime is 3898278667. The next prime is 3898278691. The reversal of 3898278687 is 7868728983.

3898278687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3898278687 - 2¹¹ = 3898276639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898278667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485568 + ... + 493530.

It is an arithmetic number, because the mean of its divisors is an integer number (178473240).

Almost surely, 2^3898278687 is an apocalyptic number.

3898278687 is a deficient number, since it is larger than the sum of its proper divisors (1812864993).

3898278687 is a wasteful number, since it uses less digits than its factorization.

3898278687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343.

The product of its digits is 65028096, while the sum is 66.

The square root of 3898278687 is about 62436.1969293454. The cubic root of 3898278687 is about 1573.8293055004.

The spelling of 3898278687 in words is "three billion, eight hundred ninety-eight million, two hundred seventy-eight thousand, six hundred eighty-seven".