1194947748638 has 16 divisors (see below), whose sum is σ = 2067275268960. Its totient is φ = 507422110176.

The previous prime is 1194947748637. The next prime is 1194947748677. The reversal of 1194947748638 is 8368477494911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1194947748637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391527881 + ... + 391530932.

It is an arithmetic number, because the mean of its divisors is an integer number (129204704310).

Almost surely, 2^{1194947748638} is an apocalyptic number.

1194947748638 is a deficient number, since it is larger than the sum of its proper divisors (872327520322).

1194947748638 is a wasteful number, since it uses less digits than its factorization.

1194947748638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783058931.

The product of its digits is 292626432, while the sum is 71.

The spelling of 1194947748638 in words is "one trillion, one hundred ninety-four billion, nine hundred forty-seven million, seven hundred forty-eight thousand, six hundred thirty-eight".