1613193794 has 4 divisors (see below), whose sum is σ = 2419790694. Its totient is φ = 806596896.

The previous prime is 1613193793. The next prime is 1613193839. The reversal of 1613193794 is 4973913161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4973913161 = 7 ⋅710559023.

It can be written as a sum of positive squares in only one way, i.e., 1381088569 + 232105225 = 37163^2 + 15235^2 .

It is a super-2 number, since 2×1613193794² = 5204788434000228872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1613193793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403298447 + ... + 403298450.

Almost surely, 2^1613193794 is an apocalyptic number.

1613193794 is a deficient number, since it is larger than the sum of its proper divisors (806596900).

1613193794 is an equidigital number, since it uses as much as digits as its factorization.

1613193794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806596899.

The product of its digits is 122472, while the sum is 44.

The square root of 1613193794 is about 40164.5838270484. The cubic root of 1613193794 is about 1172.8132060161.

The spelling of 1613193794 in words is "one billion, six hundred thirteen million, one hundred ninety-three thousand, seven hundred ninety-four".