1298668194 has 32 divisors (see below), whose sum is σ = 2956322880. Its totient is φ = 422330400.

The previous prime is 1298668193. The next prime is 1298668211. The reversal of 1298668194 is 4918668921.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1298668194.

It is not an unprimeable number, because it can be changed into a prime (1298668193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291072 + ... + 295499.

It is an arithmetic number, because the mean of its divisors is an integer number (92385090).

Almost surely, 2^1298668194 is an apocalyptic number.

1298668194 is an abundant number, since it is smaller than the sum of its proper divisors (1657654686).

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

1298668194 is a wasteful number, since it uses less digits than its factorization.

1298668194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586623 (or 586617 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 1298668194 is about 36037.0391958052. The cubic root of 1298668194 is about 1091.0200573599.

The spelling of 1298668194 in words is "one billion, two hundred ninety-eight million, six hundred sixty-eight thousand, one hundred ninety-four".