18925538867422 has 32 divisors (see below), whose sum is σ = 31156946342784. Its totient is φ = 8550435751200.

The previous prime is 18925538867419. The next prime is 18925538867509. The reversal of 18925538867422 is 22476883552981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821113 + ... + 6206875.

It is an arithmetic number, because the mean of its divisors is an integer number (973654573212).

Almost surely, 2^{18925538867422} is an apocalyptic number.

18925538867422 is a deficient number, since it is larger than the sum of its proper divisors (12231407475362).

18925538867422 is a wasteful number, since it uses less digits than its factorization.

18925538867422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386744.

The product of its digits is 464486400, while the sum is 70.

The spelling of 18925538867422 in words is "eighteen trillion, nine hundred twenty-five billion, five hundred thirty-eight million, eight hundred sixty-seven thousand, four hundred twenty-two".