2069436138 has 64 divisors (see below), whose sum is σ = 5202938880. Its totient is φ = 537501360.

The previous prime is 2069436137. The next prime is 2069436181. The reversal of 2069436138 is 8316349602.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2069436138.

It is not an unprimeable number, because it can be changed into a prime (2069436137) 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, 37393 + ... + 74411.

It is an arithmetic number, because the mean of its divisors is an integer number (81295920).

Almost surely, 2^2069436138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2069436138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2601469440).

2069436138 is an abundant number, since it is smaller than the sum of its proper divisors (3133502742).

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

2069436138 is a wasteful number, since it uses less digits than its factorization.

2069436138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37064 (or 37042 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 2069436138 is about 45491.0555823889. The cubic root of 2069436138 is about 1274.3361686986.

The spelling of 2069436138 in words is "two billion, sixty-nine million, four hundred thirty-six thousand, one hundred thirty-eight".