1855349697 has 8 divisors (see below), whose sum is σ = 2474066560. Its totient is φ = 1236766320.

The previous prime is 1855349669. The next prime is 1855349701. The reversal of 1855349697 is 7969435581.

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

It is not a de Polignac number, because 1855349697 - 2⁶ = 1855349633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1855349627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5547 + ... + 61167.

It is an arithmetic number, because the mean of its divisors is an integer number (309258320).

Almost surely, 2^1855349697 is an apocalyptic number.

It is an amenable number.

1855349697 is a deficient number, since it is larger than the sum of its proper divisors (618716863).

1855349697 is a wasteful number, since it uses less digits than its factorization.

1855349697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66743.

The product of its digits is 8164800, while the sum is 57.

The square root of 1855349697 is about 43073.7704061300. The cubic root of 1855349697 is about 1228.7831835618.

The spelling of 1855349697 in words is "one billion, eight hundred fifty-five million, three hundred forty-nine thousand, six hundred ninety-seven".