1861232604088 has 128 divisors (see below), whose sum is σ = 4195737584640. Its totient is φ = 762753600000.

The previous prime is 1861232604073. The next prime is 1861232604107. The reversal of 1861232604088 is 8804062321681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26364838 + ... + 26435338.

It is an arithmetic number, because the mean of its divisors is an integer number (32779199880).

Almost surely, 2^{1861232604088} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1861232604088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2097868792320).

1861232604088 is an abundant number, since it is smaller than the sum of its proper divisors (2334504980552).

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

1861232604088 is a wasteful number, since it uses less digits than its factorization.

1861232604088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71069 (or 71065 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 1861232604088 in words is "one trillion, eight hundred sixty-one billion, two hundred thirty-two million, six hundred four thousand, eighty-eight".