3898178389 has 12 divisors (see below), whose sum is σ = 4602300384. Its totient is φ = 3291422904.

The previous prime is 3898178381. The next prime is 3898178393. The reversal of 3898178389 is 9838718983.

It is not a de Polignac number, because 3898178389 - 2³ = 3898178381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3898178389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898178381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 590409 + ... + 596974.

It is an arithmetic number, because the mean of its divisors is an integer number (383525032).

Almost surely, 2^3898178389 is an apocalyptic number.

It is an amenable number.

3898178389 is a deficient number, since it is larger than the sum of its proper divisors (704121995).

3898178389 is a wasteful number, since it uses less digits than its factorization.

3898178389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187464 (or 1187457 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 64.

The square root of 3898178389 is about 62435.3937202289. The cubic root of 3898178389 is about 1573.8158078092.

It can be divided in two parts, 38981 and 78389, that added together give a triangular number (117370 = T₄₈₄).

The spelling of 3898178389 in words is "three billion, eight hundred ninety-eight million, one hundred seventy-eight thousand, three hundred eighty-nine".