1861068630 has 16 divisors (see below), whose sum is σ = 4466564784. Its totient is φ = 496284960.

The previous prime is 1861068619. The next prime is 1861068709. The reversal of 1861068630 is 368601681.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31017781 + ... + 31017840.

It is an arithmetic number, because the mean of its divisors is an integer number (279160299).

Almost surely, 2^1861068630 is an apocalyptic number.

1861068630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1861068630 is an abundant number, since it is smaller than the sum of its proper divisors (2605496154).

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

1861068630 is a wasteful number, since it uses less digits than its factorization.

1861068630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62035631.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1861068630 is about 43140.1046591220. The cubic root of 1861068630 is about 1230.0444230106.

The spelling of 1861068630 in words is "one billion, eight hundred sixty-one million, sixty-eight thousand, six hundred thirty".