1423853849 has 4 divisors (see below), whose sum is σ = 1553295120. Its totient is φ = 1294412580.

The previous prime is 1423853843. The next prime is 1423853909. The reversal of 1423853849 is 9483583241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423853849 is a prime.

It is a super-2 number, since 2×1423853849² = 4054719566624229602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423853843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64720619 + ... + 64720640.

It is an arithmetic number, because the mean of its divisors is an integer number (388323780).

Almost surely, 2^1423853849 is an apocalyptic number.

It is an amenable number.

1423853849 is a deficient number, since it is larger than the sum of its proper divisors (129441271).

1423853849 is a wasteful number, since it uses less digits than its factorization.

1423853849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129441270.

The product of its digits is 829440, while the sum is 47.

The square root of 1423853849 is about 37733.9879816592. The cubic root of 1423853849 is about 1125.0067750045.

The spelling of 1423853849 in words is "one billion, four hundred twenty-three million, eight hundred fifty-three thousand, eight hundred forty-nine".