1942987983 has 16 divisors (see below), whose sum is σ = 2623485696. Its totient is φ = 1278982080.

The previous prime is 1942987979. The next prime is 1942987999. The reversal of 1942987983 is 3897892491.

It is not a de Polignac number, because 1942987983 - 2² = 1942987979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942987903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98163 + ... + 116283.

It is an arithmetic number, because the mean of its divisors is an integer number (163967856).

Almost surely, 2^1942987983 is an apocalyptic number.

1942987983 is a deficient number, since it is larger than the sum of its proper divisors (680497713).

1942987983 is a wasteful number, since it uses less digits than its factorization.

1942987983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18574.

The product of its digits is 7838208, while the sum is 60.

The square root of 1942987983 is about 44079.3373702464. The cubic root of 1942987983 is about 1247.8336842028.

The spelling of 1942987983 in words is "one billion, nine hundred forty-two million, nine hundred eighty-seven thousand, nine hundred eighty-three".