1920938542 has 12 divisors (see below), whose sum is σ = 2898849240. Its totient is φ = 954690236.

The previous prime is 1920938521. The next prime is 1920938549. The reversal of 1920938542 is 2458390291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920938549) 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, 38559 + ... + 72997.

It is an arithmetic number, because the mean of its divisors is an integer number (241570770).

Almost surely, 2^1920938542 is an apocalyptic number.

1920938542 is a deficient number, since it is larger than the sum of its proper divisors (977910698).

1920938542 is an equidigital number, since it uses as much as digits as its factorization.

1920938542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34775 (or 34608 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1920938542 is about 43828.5128883014. The cubic root of 1920938542 is about 1243.0954880176.

The spelling of 1920938542 in words is "one billion, nine hundred twenty million, nine hundred thirty-eight thousand, five hundred forty-two".