1816389427442 has 8 divisors (see below), whose sum is σ = 2724784239600. Its totient is φ = 908128014244.

The previous prime is 1816389427417. The next prime is 1816389427459. The reversal of 1816389427442 is 2447249836181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33315692 + ... + 33370167.

It is an arithmetic number, because the mean of its divisors is an integer number (340598029950).

Almost surely, 2^{1816389427442} is an apocalyptic number.

1816389427442 is a deficient number, since it is larger than the sum of its proper divisors (908394812158).

1816389427442 is a wasteful number, since it uses less digits than its factorization.

1816389427442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66699480.

The product of its digits is 18579456, while the sum is 59.

The spelling of 1816389427442 in words is "one trillion, eight hundred sixteen billion, three hundred eighty-nine million, four hundred twenty-seven thousand, four hundred forty-two".