1861413158 has 8 divisors (see below), whose sum is σ = 3045948840. Its totient is φ = 846096880.

The previous prime is 1861413157. The next prime is 1861413173. The reversal of 1861413158 is 8513141681.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861413157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42304823 + ... + 42304866.

It is an arithmetic number, because the mean of its divisors is an integer number (380743605).

Almost surely, 2^1861413158 is an apocalyptic number.

1861413158 is a deficient number, since it is larger than the sum of its proper divisors (1184535682).

1861413158 is a wasteful number, since it uses less digits than its factorization.

1861413158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84609702.

The product of its digits is 23040, while the sum is 38.

The square root of 1861413158 is about 43144.0976032643. The cubic root of 1861413158 is about 1230.1203218051.

The spelling of 1861413158 in words is "one billion, eight hundred sixty-one million, four hundred thirteen thousand, one hundred fifty-eight".