1613993448 has 16 divisors (see below), whose sum is σ = 4034983680. Its totient is φ = 537997808.

The previous prime is 1613993443. The next prime is 1613993473. The reversal of 1613993448 is 8443993161.

It is a junction number, because it is equal to n+sod(n) for n = 1613993397 and 1613993406.

It is not an unprimeable number, because it can be changed into a prime (1613993443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33624840 + ... + 33624887.

It is an arithmetic number, because the mean of its divisors is an integer number (252186480).

Almost surely, 2^1613993448 is an apocalyptic number.

It is an amenable number.

1613993448 is an abundant number, since it is smaller than the sum of its proper divisors (2420990232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1613993448 is a wasteful number, since it uses less digits than its factorization.

1613993448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67249736 (or 67249732 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 1613993448 is about 40174.5373090967. The cubic root of 1613993448 is about 1173.0069603469.

The spelling of 1613993448 in words is "one billion, six hundred thirteen million, nine hundred ninety-three thousand, four hundred forty-eight".