1861622828627 has 8 divisors (see below), whose sum is σ = 1872551014560. Its totient is φ = 1850696566720.

The previous prime is 1861622828617. The next prime is 1861622828669. The reversal of 1861622828627 is 7268282261681.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1861622828627 - 2¹⁸ = 1861622566483 is a prime.

It is a super-2 number, since 2×1861622828627² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1861622828617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483274 + ... + 2433792.

It is an arithmetic number, because the mean of its divisors is an integer number (234068876820).

Almost surely, 2^{1861622828627} is an apocalyptic number.

1861622828627 is a deficient number, since it is larger than the sum of its proper divisors (10928185933).

1861622828627 is a wasteful number, since it uses less digits than its factorization.

1861622828627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962013.

The product of its digits is 12386304, while the sum is 59.

The spelling of 1861622828627 in words is "one trillion, eight hundred sixty-one billion, six hundred twenty-two million, eight hundred twenty-eight thousand, six hundred twenty-seven".