1811469448 has 16 divisors (see below), whose sum is σ = 3454074000. Its totient is φ = 890383056.

The previous prime is 1811469371. The next prime is 1811469449. The reversal of 1811469448 is 8449641181.

It is a super-2 number, since 2×1811469448² = 6562843122074849408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1811469398 and 1811469407.

It is not an unprimeable number, because it can be changed into a prime (1811469449) 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, 1918458 + ... + 1919401.

It is an arithmetic number, because the mean of its divisors is an integer number (215879625).

Almost surely, 2^1811469448 is an apocalyptic number.

It is an amenable number.

1811469448 is a deficient number, since it is larger than the sum of its proper divisors (1642604552).

1811469448 is a wasteful number, since it uses less digits than its factorization.

1811469448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837924 (or 3837920 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 1811469448 is about 42561.3609744801. The cubic root of 1811469448 is about 1219.0186159513.

The spelling of 1811469448 in words is "one billion, eight hundred eleven million, four hundred sixty-nine thousand, four hundred forty-eight".