19356750953 has 24 divisors (see below), whose sum is σ = 20805751032. Its totient is φ = 18003492864.

The previous prime is 19356750937. The next prime is 19356750967. The reversal of 19356750953 is 35905765391.

It can be written as a sum of positive squares in 12 ways, for example, as 409779049 + 18946971904 = 20243^2 + 137648^2 .

It is not a de Polignac number, because 19356750953 - 2⁴ = 19356750937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19356750895 and 19356750904.

It is not an unprimeable number, because it can be changed into a prime (19356750983) 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, 14923601 + ... + 14924897.

It is an arithmetic number, because the mean of its divisors is an integer number (866906293).

Almost surely, 2^19356750953 is an apocalyptic number.

It is an amenable number.

19356750953 is a deficient number, since it is larger than the sum of its proper divisors (1449000079).

19356750953 is a wasteful number, since it uses less digits than its factorization.

19356750953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1884 counting only the distinct ones).

The product of its (nonzero) digits is 3827250, while the sum is 53.

The spelling of 19356750953 in words is "nineteen billion, three hundred fifty-six million, seven hundred fifty thousand, nine hundred fifty-three".