1858472099 has 16 divisors (see below), whose sum is σ = 2135616000. Its totient is φ = 1599484320.

The previous prime is 1858472089. The next prime is 1858472123. The reversal of 1858472099 is 9902748581.

It is a Cunningham number, because it is equal to 43110²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1858472099 is a prime.

It is a super-2 number, since 2×1858472099² = 6907837085522931602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1858472099.

It is not an unprimeable number, because it can be changed into a prime (1858472009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472262 + ... + 476180.

It is an arithmetic number, because the mean of its divisors is an integer number (133476000).

Almost surely, 2^1858472099 is an apocalyptic number.

1858472099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1858472099 is a deficient number, since it is larger than the sum of its proper divisors (277143901).

1858472099 is a wasteful number, since it uses less digits than its factorization.

1858472099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The square root of 1858472099 is about 43109.9999884018. Note that the first 4 decimals coincide. The cubic root of 1858472099 is about 1229.4721111480.

The spelling of 1858472099 in words is "one billion, eight hundred fifty-eight million, four hundred seventy-two thousand, ninety-nine".