1940205159 has 12 divisors (see below), whose sum is σ = 2950019800. Its totient is φ = 1225392624.

The previous prime is 1940205133. The next prime is 1940205187. The reversal of 1940205159 is 9515020491.

It is not a de Polignac number, because 1940205159 - 2⁷ = 1940205031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940205109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5672944 + ... + 5673285.

Almost surely, 2^1940205159 is an apocalyptic number.

1940205159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1940205159 is a deficient number, since it is larger than the sum of its proper divisors (1009814641).

1940205159 is a wasteful number, since it uses less digits than its factorization.

1940205159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11346254 (or 11346251 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 1940205159 is about 44047.7599770976. The cubic root of 1940205159 is about 1247.2376673647.

The spelling of 1940205159 in words is "one billion, nine hundred forty million, two hundred five thousand, one hundred fifty-nine".