1942880387 has 4 divisors (see below), whose sum is σ = 2220434736. Its totient is φ = 1665326040.

The previous prime is 1942880383. The next prime is 1942880393. The reversal of 1942880387 is 7830882491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7830882491 = 421 ⋅18600671.

It is not a de Polignac number, because 1942880387 - 2² = 1942880383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942880383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138777164 + ... + 138777177.

It is an arithmetic number, because the mean of its divisors is an integer number (555108684).

Almost surely, 2^1942880387 is an apocalyptic number.

1942880387 is a deficient number, since it is larger than the sum of its proper divisors (277554349).

1942880387 is an equidigital number, since it uses as much as digits as its factorization.

1942880387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277554348.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 1942880387 is about 44078.1168722077. The cubic root of 1942880387 is about 1247.8106501967.

The spelling of 1942880387 in words is "one billion, nine hundred forty-two million, eight hundred eighty thousand, three hundred eighty-seven".