1888945045 has 8 divisors (see below), whose sum is σ = 2441098296. Its totient is φ = 1394913216.

The previous prime is 1888945031. The next prime is 1888945049. The reversal of 1888945045 is 5405498881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 180445489 + 1708499556 = 13433^2 + 41334^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1888945045 - 2²⁵ = 1855390613 is a prime.

It is a super-2 number, since 2×1888945045² = 7136226766060104050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1888944983 and 1888945001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1888945049) 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, 14530282 + ... + 14530411.

It is an arithmetic number, because the mean of its divisors is an integer number (305137287).

Almost surely, 2^1888945045 is an apocalyptic number.

It is an amenable number.

1888945045 is a deficient number, since it is larger than the sum of its proper divisors (552153251).

1888945045 is a wasteful number, since it uses less digits than its factorization.

1888945045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29060711.

The product of its (nonzero) digits is 1843200, while the sum is 52.

The square root of 1888945045 is about 43461.9954097830. The cubic root of 1888945045 is about 1236.1555063591.

The spelling of 1888945045 in words is "one billion, eight hundred eighty-eight million, nine hundred forty-five thousand, forty-five".