1745338881 has 96 divisors (see below), whose sum is σ = 2988316800. Its totient is φ = 894566400.

The previous prime is 1745338873. The next prime is 1745338943. The reversal of 1745338881 is 1888335471.

It is a happy number.

It is not a de Polignac number, because 1745338881 - 2³ = 1745338873 is a prime.

It is a super-2 number, since 2×1745338881² = 6092415619060664322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1745338881.

It is not an unprimeable number, because it can be changed into a prime (1745338381) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3886945 + ... + 3887393.

It is an arithmetic number, because the mean of its divisors is an integer number (31128300).

Almost surely, 2^1745338881 is an apocalyptic number.

1745338881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1745338881 is a deficient number, since it is larger than the sum of its proper divisors (1242977919).

1745338881 is a wasteful number, since it uses less digits than its factorization.

1745338881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 534 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 1745338881 is about 41777.2531528821. The cubic root of 1745338881 is about 1204.0002798442. Note that the first 3 decimals are identical.

The spelling of 1745338881 in words is "one billion, seven hundred forty-five million, three hundred thirty-eight thousand, eight hundred eighty-one".