1939491548 has 12 divisors (see below), whose sum is σ = 3401540352. Its totient is φ = 967622880.

The previous prime is 1939491517. The next prime is 1939491569. The reversal of 1939491548 is 8451949391.

It is a self number, because there is not a number n which added to its sum of digits gives 1939491548.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528668 + ... + 532323.

It is an arithmetic number, because the mean of its divisors is an integer number (283461696).

Almost surely, 2^1939491548 is an apocalyptic number.

It is an amenable number.

1939491548 is a deficient number, since it is larger than the sum of its proper divisors (1462048804).

1939491548 is a wasteful number, since it uses less digits than its factorization.

1939491548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061452 (or 1061450 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 53.

The square root of 1939491548 is about 44039.6588088509. The cubic root of 1939491548 is about 1247.0847365166.

The spelling of 1939491548 in words is "one billion, nine hundred thirty-nine million, four hundred ninety-one thousand, five hundred forty-eight".