19157246933309 has 4 divisors (see below), whose sum is σ = 19173040213116. Its totient is φ = 19141453653504.

The previous prime is 19157246933299. The next prime is 19157246933329. The reversal of 19157246933309 is 90333964275191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3391939925284 + 15765307008025 = 1841722^2 + 3970555^2 .

It is a cyclic number.

It is not a de Polignac number, because 19157246933309 - 2³² = 19152951966013 is a prime.

It is a super-2 number, since 2×19157246933309² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19157246933329) 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, 7896638084 + ... + 7896640509.

It is an arithmetic number, because the mean of its divisors is an integer number (4793260053279).

Almost surely, 2^{19157246933309} is an apocalyptic number.

It is an amenable number.

19157246933309 is a deficient number, since it is larger than the sum of its proper divisors (15793279807).

19157246933309 is a wasteful number, since it uses less digits than its factorization.

19157246933309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15793279806.

The product of its (nonzero) digits is 33067440, while the sum is 62.

The spelling of 19157246933309 in words is "nineteen trillion, one hundred fifty-seven billion, two hundred forty-six million, nine hundred thirty-three thousand, three hundred nine".