2801442138 has 32 divisors (see below), whose sum is σ = 6471783360. Its totient is φ = 798984960.

The previous prime is 2801442107. The next prime is 2801442139. The reversal of 2801442138 is 8312441082.

It is a super-2 number, since 2×2801442138² = 15696156105124022088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 2801442099 and 2801442108.

It is not an unprimeable number, because it can be changed into a prime (2801442139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1247293 + ... + 1249536.

It is an arithmetic number, because the mean of its divisors is an integer number (202243230).

Almost surely, 2^2801442138 is an apocalyptic number.

2801442138 is an abundant number, since it is smaller than the sum of its proper divisors (3670341222).

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

2801442138 is a wasteful number, since it uses less digits than its factorization.

2801442138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496862.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 2801442138 is about 52928.6513903387. The cubic root of 2801442138 is about 1409.7016852928.

It can be divided in two parts, 280144 and 2138, that added together give a palindrome (282282).

The spelling of 2801442138 in words is "two billion, eight hundred one million, four hundred forty-two thousand, one hundred thirty-eight".