1942280989 has 6 divisors (see below), whose sum is σ = 2134904030. Its totient is φ = 1765709880.

The previous prime is 1942280971. The next prime is 1942280993. The reversal of 1942280989 is 9890822491.

It can be written as a sum of positive squares in only one way, i.e., 1289887225 + 652393764 = 35915^2 + 25542^2 .

It is not a de Polignac number, because 1942280989 - 2²⁵ = 1908726557 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 (1942280959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8025834 + ... + 8026075.

Almost surely, 2^1942280989 is an apocalyptic number.

It is an amenable number.

1942280989 is a deficient number, since it is larger than the sum of its proper divisors (192623041).

1942280989 is a wasteful number, since it uses less digits than its factorization.

1942280989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051931 (or 16051920 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1942280989 is about 44071.3170781178. The cubic root of 1942280989 is about 1247.6823163165.

The spelling of 1942280989 in words is "one billion, nine hundred forty-two million, two hundred eighty thousand, nine hundred eighty-nine".