18965897348 has 6 divisors (see below), whose sum is σ = 33190320366. Its totient is φ = 9482948672.

The previous prime is 18965897347. The next prime is 18965897381. The reversal of 18965897348 is 84379856981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14774888704 + 4191008644 = 121552^2 + 64738^2 .

It is not an unprimeable number, because it can be changed into a prime (18965897347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2370737165 + ... + 2370737172.

It is an arithmetic number, because the mean of its divisors is an integer number (5531720061).

Almost surely, 2^18965897348 is an apocalyptic number.

It is an amenable number.

18965897348 is a deficient number, since it is larger than the sum of its proper divisors (14224423018).

18965897348 is a wasteful number, since it uses less digits than its factorization.

18965897348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741474341 (or 4741474339 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 68.

The spelling of 18965897348 in words is "eighteen billion, nine hundred sixty-five million, eight hundred ninety-seven thousand, three hundred forty-eight".