1013813194 has 4 divisors (see below), whose sum is σ = 1520719794. Its totient is φ = 506906596.

The previous prime is 1013813183. The next prime is 1013813197. The reversal of 1013813194 is 4913183101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4913183101 = 653 ⋅7524017.

It can be written as a sum of positive squares in only one way, i.e., 745999969 + 267813225 = 27313^2 + 16365^2 .

It is not an unprimeable number, because it can be changed into a prime (1013813197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253453297 + ... + 253453300.

Almost surely, 2^1013813194 is an apocalyptic number.

1013813194 is a deficient number, since it is larger than the sum of its proper divisors (506906600).

1013813194 is an equidigital number, since it uses as much as digits as its factorization.

1013813194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506906599.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1013813194 is about 31840.4333199157. The cubic root of 1013813194 is about 1004.5833587283.

Adding to 1013813194 its reverse (4913183101), we get a palindrome (5926996295).

It can be divided in two parts, 10138 and 13194, that added together give a palindrome (23332).

The spelling of 1013813194 in words is "one billion, thirteen million, eight hundred thirteen thousand, one hundred ninety-four".