1858113645 has 32 divisors (see below), whose sum is σ = 3205802880. Its totient is φ = 915932160.

The previous prime is 1858113641. The next prime is 1858113659. The reversal of 1858113645 is 5463118581.

It is not a de Polignac number, because 1858113645 - 2² = 1858113641 is a prime.

It is a super-3 number, since 3×1858113645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1858113597 and 1858113606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1858113641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67824 + ... + 91193.

It is an arithmetic number, because the mean of its divisors is an integer number (100181340).

Almost surely, 2^1858113645 is an apocalyptic number.

1858113645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1858113645 is a deficient number, since it is larger than the sum of its proper divisors (1347689235).

1858113645 is a wasteful number, since it uses less digits than its factorization.

1858113645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159085.

The product of its digits is 115200, while the sum is 42.

The square root of 1858113645 is about 43105.8423534444. The cubic root of 1858113645 is about 1229.3930609910.

The spelling of 1858113645 in words is "one billion, eight hundred fifty-eight million, one hundred thirteen thousand, six hundred forty-five".