1856220136708 has 48 divisors (see below), whose sum is σ = 3799717447680. Its totient is φ = 776829834144.

The previous prime is 1856220136703. The next prime is 1856220136723. The reversal of 1856220136708 is 8076310226581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1856220136703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4722135 + ... + 5100097.

It is an arithmetic number, because the mean of its divisors is an integer number (79160780160).

Almost surely, 2^{1856220136708} is an apocalyptic number.

It is an amenable number.

1856220136708 is an abundant number, since it is smaller than the sum of its proper divisors (1943497310972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1856220136708 is a wasteful number, since it uses less digits than its factorization.

1856220136708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382096 (or 382094 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 1856220136708 in words is "one trillion, eight hundred fifty-six billion, two hundred twenty million, one hundred thirty-six thousand, seven hundred eight".