1194640438 has 8 divisors (see below), whose sum is σ = 1793275632. Its totient is φ = 596881896.

The previous prime is 1194640393. The next prime is 1194640463. The reversal of 1194640438 is 8340464911.

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

It is a super-2 number, since 2×1194640438² = 2854331552209663688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1194640438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215745 + ... + 221212.

It is an arithmetic number, because the mean of its divisors is an integer number (224159454).

Almost surely, 2^1194640438 is an apocalyptic number.

1194640438 is a deficient number, since it is larger than the sum of its proper divisors (598635194).

1194640438 is a wasteful number, since it uses less digits than its factorization.

1194640438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438326.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1194640438 is about 34563.5709671324. The cubic root of 1194640438 is about 1061.0741567687.

The spelling of 1194640438 in words is "one billion, one hundred ninety-four million, six hundred forty thousand, four hundred thirty-eight".