45985979838 has 16 divisors (see below), whose sum is σ = 91985055120. Its totient is φ = 15326477376.

The previous prime is 45985979779. The next prime is 45985979839. The reversal of 45985979838 is 83897958954.

It is a super-2 number, since 2×45985979838² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45985979838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45985979839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499695 + ... + 584522.

It is an arithmetic number, because the mean of its divisors is an integer number (5749065945).

Almost surely, 2^45985979838 is an apocalyptic number.

45985979838 is an abundant number, since it is smaller than the sum of its proper divisors (45999075282).

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

45985979838 is a wasteful number, since it uses less digits than its factorization.

45985979838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091291.

The product of its digits is 783820800, while the sum is 75.

The spelling of 45985979838 in words is "forty-five billion, nine hundred eighty-five million, nine hundred seventy-nine thousand, eight hundred thirty-eight".