1920725427 has 6 divisors (see below), whose sum is σ = 2561068452. Its totient is φ = 1280433012.

The previous prime is 1920725413. The next prime is 1920725473. The reversal of 1920725427 is 7245270291.

It is not a de Polignac number, because 1920725427 - 2¹¹ = 1920723379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1920725627) 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, 63258 + ... + 88560.

It is an arithmetic number, because the mean of its divisors is an integer number (426844742).

Almost surely, 2^1920725427 is an apocalyptic number.

1920725427 is a deficient number, since it is larger than the sum of its proper divisors (640343025).

1920725427 is an frugal number, since it uses more digits than its factorization.

1920725427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50609 (or 25306 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 1920725427 is about 43826.0815839153. The cubic root of 1920725427 is about 1243.0495153352.

The spelling of 1920725427 in words is "one billion, nine hundred twenty million, seven hundred twenty-five thousand, four hundred twenty-seven".