1861506830516 has 48 divisors (see below), whose sum is σ = 3375532392960. Its totient is φ = 897299544960.

The previous prime is 1861506830507. The next prime is 1861506830527. The reversal of 1861506830516 is 6150386051681.

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, 242727530 + ... + 242735198.

It is an arithmetic number, because the mean of its divisors is an integer number (70323591520).

Almost surely, 2^{1861506830516} is an apocalyptic number.

It is an amenable number.

1861506830516 is a deficient number, since it is larger than the sum of its proper divisors (1514025562444).

1861506830516 is a wasteful number, since it uses less digits than its factorization.

1861506830516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14904 (or 14902 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 1861506830516 in words is "one trillion, eight hundred sixty-one billion, five hundred six million, eight hundred thirty thousand, five hundred sixteen".