1048191813 has 16 divisors (see below), whose sum is σ = 1559073600. Its totient is φ = 696006000.

The previous prime is 1048191803. The next prime is 1048191821. The reversal of 1048191813 is 3181918401.

1048191813 is a `hidden beast` number, since 10 + 481 + 91 + 81 + 3 = 666.

It is not a de Polignac number, because 1048191813 - 2⁹ = 1048191301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1048191803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70558 + ... + 84111.

It is an arithmetic number, because the mean of its divisors is an integer number (97442100).

Almost surely, 2^1048191813 is an apocalyptic number.

It is an amenable number.

1048191813 is a deficient number, since it is larger than the sum of its proper divisors (510881787).

1048191813 is a wasteful number, since it uses less digits than its factorization.

1048191813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154929 (or 154923 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1048191813 is about 32375.7905386108. The cubic root of 1048191813 is about 1015.8125820029.

The spelling of 1048191813 in words is "one billion, forty-eight million, one hundred ninety-one thousand, eight hundred thirteen".