3898111890 has 64 divisors (see below), whose sum is σ = 9509892480. Its totient is φ = 1022461440.

The previous prime is 3898111837. The next prime is 3898111891. The reversal of 3898111890 is 981118983.

3898111890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3898111891) 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, 522285 + ... + 529695.

It is an arithmetic number, because the mean of its divisors is an integer number (148592070).

Almost surely, 2^3898111890 is an apocalyptic number.

3898111890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3898111890 is an abundant number, since it is smaller than the sum of its proper divisors (5611780590).

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

3898111890 is a wasteful number, since it uses less digits than its factorization.

3898111890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7707.

The product of its (nonzero) digits is 124416, while the sum is 48.

The square root of 3898111890 is about 62434.8611754683. The cubic root of 3898111890 is about 1573.8068585205.

The spelling of 3898111890 in words is "three billion, eight hundred ninety-eight million, one hundred eleven thousand, eight hundred ninety".