1994357426 has 8 divisors (see below), whose sum is σ = 2991921024. Its totient is φ = 997050420.

The previous prime is 1994357423. The next prime is 1994357429. The reversal of 1994357426 is 6247534991.

It is an interprime number because it is at equal distance from previous prime (1994357423) and next prime (1994357429).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1994357423) 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, 43370 + ... + 76613.

It is an arithmetic number, because the mean of its divisors is an integer number (373990128).

Almost surely, 2^1994357426 is an apocalyptic number.

1994357426 is a deficient number, since it is larger than the sum of its proper divisors (997563598).

1994357426 is a wasteful number, since it uses less digits than its factorization.

1994357426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128296.

The product of its digits is 1632960, while the sum is 50.

The square root of 1994357426 is about 44658.2290961028. The cubic root of 1994357426 is about 1258.7350675694.

The spelling of 1994357426 in words is "one billion, nine hundred ninety-four million, three hundred fifty-seven thousand, four hundred twenty-six".