685192481038 has 32 divisors (see below), whose sum is σ = 1126747883520. Its totient is φ = 310568243040.

The previous prime is 685192481033. The next prime is 685192481081. The reversal of 685192481038 is 830184291586.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 685192481038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685192481033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294831 + ... + 1745557.

It is an arithmetic number, because the mean of its divisors is an integer number (35210871360).

Almost surely, 2^685192481038 is an apocalyptic number.

685192481038 is a deficient number, since it is larger than the sum of its proper divisors (441555402482).

685192481038 is a wasteful number, since it uses less digits than its factorization.

685192481038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451792.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 685192481038 in words is "six hundred eighty-five billion, one hundred ninety-two million, four hundred eighty-one thousand, thirty-eight".