139148361 has 24 divisors (see below), whose sum is σ = 227389344. Its totient is φ = 84330720.

The previous prime is 139148357. The next prime is 139148369. The reversal of 139148361 is 163841931.

It is not a de Polignac number, because 139148361 - 2² = 139148357 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (139148369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23356 + ... + 28701.

It is an arithmetic number, because the mean of its divisors is an integer number (9474556).

Almost surely, 2^139148361 is an apocalyptic number.

139148361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139148361 is a deficient number, since it is larger than the sum of its proper divisors (88240983).

139148361 is an equidigital number, since it uses as much as digits as its factorization.

139148361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52083 (or 52071 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 139148361 is about 11796.1163524272. The cubic root of 139148361 is about 518.1943797761.

The spelling of 139148361 in words is "one hundred thirty-nine million, one hundred forty-eight thousand, three hundred sixty-one".