1899471245 has 8 divisors (see below), whose sum is σ = 2604989184. Its totient is φ = 1302494544.

The previous prime is 1899471199. The next prime is 1899471263. The reversal of 1899471245 is 5421749981.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1899471245 - 2²⁸ = 1631035789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1899471193 and 1899471202.

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, 27135269 + ... + 27135338.

It is an arithmetic number, because the mean of its divisors is an integer number (325623648).

Almost surely, 2^1899471245 is an apocalyptic number.

It is an amenable number.

1899471245 is a deficient number, since it is larger than the sum of its proper divisors (705517939).

1899471245 is an equidigital number, since it uses as much as digits as its factorization.

1899471245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54270619.

The product of its digits is 725760, while the sum is 50.

The square root of 1899471245 is about 43582.9237775531. The cubic root of 1899471245 is about 1238.4474249311.

The spelling of 1899471245 in words is "one billion, eight hundred ninety-nine million, four hundred seventy-one thousand, two hundred forty-five".