3138847830 has 24 divisors (see below), whose sum is σ = 8161004592. Its totient is φ = 837026064.

The previous prime is 3138847807. The next prime is 3138847843. The reversal of 3138847830 is 387488313.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17437954 + ... + 17438133.

It is an arithmetic number, because the mean of its divisors is an integer number (340041858).

Almost surely, 2^3138847830 is an apocalyptic number.

3138847830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3138847830 is an abundant number, since it is smaller than the sum of its proper divisors (5022156762).

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

3138847830 is a wasteful number, since it uses less digits than its factorization.

3138847830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34876100 (or 34876097 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 3138847830 is about 56025.4212835566. The cubic root of 3138847830 is about 1464.1652231111.

The spelling of 3138847830 in words is "three billion, one hundred thirty-eight million, eight hundred forty-seven thousand, eight hundred thirty".