139852818 has 112 divisors (see below), whose sum is σ = 366408576. Its totient is φ = 39191040.

The previous prime is 139852807. The next prime is 139852837. The reversal of 139852818 is 818258931.

It is a happy number.

It is a super-2 number, since 2×139852818² = 39117621405082248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 724530 + ... + 724722.

Almost surely, 2^139852818 is an apocalyptic number.

139852818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139852818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183204288).

139852818 is an abundant number, since it is smaller than the sum of its proper divisors (226555758).

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

139852818 is an equidigital number, since it uses as much as digits as its factorization.

139852818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 276 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 139852818 is about 11825.9383560037. The cubic root of 139852818 is about 519.0673840805.

The spelling of 139852818 in words is "one hundred thirty-nine million, eight hundred fifty-two thousand, eight hundred eighteen".