1855420299 has 6 divisors (see below), whose sum is σ = 2680051556. Its totient is φ = 1236946860.

The previous prime is 1855420279. The next prime is 1855420313. The reversal of 1855420299 is 9920245581.

It is a happy number.

1855420299 is a `hidden beast` number, since 1 + 8 + 554 + 2 + 0 + 2 + 99 = 666.

It is not a de Polignac number, because 1855420299 - 2⁸ = 1855420043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1855420249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103078897 + ... + 103078914.

Almost surely, 2^1855420299 is an apocalyptic number.

1855420299 is a deficient number, since it is larger than the sum of its proper divisors (824631257).

1855420299 is a wasteful number, since it uses less digits than its factorization.

1855420299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206157817 (or 206157814 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1855420299 is about 43074.5899458138. The cubic root of 1855420299 is about 1228.7987697430.

The spelling of 1855420299 in words is "one billion, eight hundred fifty-five million, four hundred twenty thousand, two hundred ninety-nine".