139145364349 has 16 divisors (see below), whose sum is σ = 144833391360. Its totient is φ = 133572628800.

The previous prime is 139145364311. The next prime is 139145364467. The reversal of 139145364349 is 943463541931.

It is a cyclic number.

It is not a de Polignac number, because 139145364349 - 2¹⁵ = 139145331581 is a prime.

It is a super-2 number, since 2×139145364349² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139145364296 and 139145364305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139155364349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10084147 + ... + 10097935.

It is an arithmetic number, because the mean of its divisors is an integer number (9052086960).

Almost surely, 2^139145364349 is an apocalyptic number.

It is an amenable number.

139145364349 is a deficient number, since it is larger than the sum of its proper divisors (5688027011).

139145364349 is a wasteful number, since it uses less digits than its factorization.

139145364349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17940.

The product of its digits is 4199040, while the sum is 52.

The spelling of 139145364349 in words is "one hundred thirty-nine billion, one hundred forty-five million, three hundred sixty-four thousand, three hundred forty-nine".