1940108545 has 8 divisors (see below), whose sum is σ = 2329638696. Its totient is φ = 1551081216.

The previous prime is 1940108537. The next prime is 1940108609. The reversal of 1940108545 is 5458010491.

It can be written as a sum of positive squares in 4 ways, for example, as 291180096 + 1648928449 = 17064^2 + 40607^2 .

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 1940108545 - 2³ = 1940108537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117162 + ... + 132691.

It is an arithmetic number, because the mean of its divisors is an integer number (291204837).

Almost surely, 2^1940108545 is an apocalyptic number.

It is an amenable number.

1940108545 is a deficient number, since it is larger than the sum of its proper divisors (389530151).

1940108545 is a wasteful number, since it uses less digits than its factorization.

1940108545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251411.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 1940108545 is about 44046.6632674939. The cubic root of 1940108545 is about 1247.2169646365.

The spelling of 1940108545 in words is "one billion, nine hundred forty million, one hundred eight thousand, five hundred forty-five".