1948821542 has 4 divisors (see below), whose sum is σ = 2923232316. Its totient is φ = 974410770.

The previous prime is 1948821529. The next prime is 1948821551. The reversal of 1948821542 is 2451288491.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1948821493 and 1948821502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487205384 + ... + 487205387.

It is an arithmetic number, because the mean of its divisors is an integer number (730808079).

Almost surely, 2^1948821542 is an apocalyptic number.

1948821542 is a deficient number, since it is larger than the sum of its proper divisors (974410774).

1948821542 is an equidigital number, since it uses as much as digits as its factorization.

1948821542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974410773.

The product of its digits is 184320, while the sum is 44.

The square root of 1948821542 is about 44145.4589057584. The cubic root of 1948821542 is about 1249.0812538499.

The spelling of 1948821542 in words is "one billion, nine hundred forty-eight million, eight hundred twenty-one thousand, five hundred forty-two".