1881358745 has 16 divisors (see below), whose sum is σ = 2598718080. Its totient is φ = 1280790144.

The previous prime is 1881358729. The next prime is 1881358849. The reversal of 1881358745 is 5478531881.

It is a cyclic number.

It is not a de Polignac number, because 1881358745 - 2⁴ = 1881358729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1881358693 and 1881358702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188492 + ... + 198221.

It is an arithmetic number, because the mean of its divisors is an integer number (162419880).

Almost surely, 2^1881358745 is an apocalyptic number.

It is an amenable number.

1881358745 is a deficient number, since it is larger than the sum of its proper divisors (717359335).

1881358745 is a wasteful number, since it uses less digits than its factorization.

1881358745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386864.

The product of its digits is 1075200, while the sum is 50.

The square root of 1881358745 is about 43374.6325056478. The cubic root of 1881358745 is about 1234.4984211110.

The spelling of 1881358745 in words is "one billion, eight hundred eighty-one million, three hundred fifty-eight thousand, seven hundred forty-five".