115185603749 has 4 divisors (see below), whose sum is σ = 115209255840. Its totient is φ = 115161951660.

The previous prime is 115185603739. The next prime is 115185603751. The reversal of 115185603749 is 947306581511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 947306581511 = 522827 ⋅1811893.

It is a cyclic number.

It is not a de Polignac number, because 115185603749 - 2⁸ = 115185603493 is a prime.

It is a super-2 number, since 2×115185603749² (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 = 115185603697 and 115185603706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115185603739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11818739 + ... + 11828480.

It is an arithmetic number, because the mean of its divisors is an integer number (28802313960).

Almost surely, 2^115185603749 is an apocalyptic number.

It is an amenable number.

115185603749 is a deficient number, since it is larger than the sum of its proper divisors (23652091).

115185603749 is an equidigital number, since it uses as much as digits as its factorization.

115185603749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23652090.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 115185603749 in words is "one hundred fifteen billion, one hundred eighty-five million, six hundred three thousand, seven hundred forty-nine".