1981960903 has 8 divisors (see below), whose sum is σ = 2135460096. Its totient is φ = 1828610400.

The previous prime is 1981960873. The next prime is 1981960921. The reversal of 1981960903 is 3090691891.

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 1981960903 - 2¹⁷ = 1981829831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1981960933) 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, 8668 + ... + 63553.

It is an arithmetic number, because the mean of its divisors is an integer number (266932512).

Almost surely, 2^1981960903 is an apocalyptic number.

1981960903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1981960903 is a deficient number, since it is larger than the sum of its proper divisors (153499193).

1981960903 is a wasteful number, since it uses less digits than its factorization.

1981960903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74345.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 1981960903 is about 44519.2194787824. The cubic root of 1981960903 is about 1256.1216308754.

The spelling of 1981960903 in words is "one billion, nine hundred eighty-one million, nine hundred sixty thousand, nine hundred three".