1861411271522 has 8 divisors (see below), whose sum is σ = 3045945717072. Its totient is φ = 846096032500.

The previous prime is 1861411271513. The next prime is 1861411271539. The reversal of 1861411271522 is 2251721141681.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1861411271522.

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, 42304801604 + ... + 42304801647.

It is an arithmetic number, because the mean of its divisors is an integer number (380743214634).

Almost surely, 2^{1861411271522} is an apocalyptic number.

1861411271522 is a deficient number, since it is larger than the sum of its proper divisors (1184534445550).

1861411271522 is a wasteful number, since it uses less digits than its factorization.

1861411271522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84609603264.

The product of its digits is 53760, while the sum is 41.

The spelling of 1861411271522 in words is "one trillion, eight hundred sixty-one billion, four hundred eleven million, two hundred seventy-one thousand, five hundred twenty-two".