1189728617390 has 32 divisors (see below), whose sum is σ = 2172492596736. Its totient is φ = 469011817120.

The previous prime is 1189728617377. The next prime is 1189728617417. The reversal of 1189728617390 is 937168279811.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1576109 + ... + 2205351.

It is an arithmetic number, because the mean of its divisors is an integer number (67890393648).

Almost surely, 2^{1189728617390} is an apocalyptic number.

1189728617390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1189728617390 is a deficient number, since it is larger than the sum of its proper divisors (982763979346).

1189728617390 is a wasteful number, since it uses less digits than its factorization.

1189728617390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631984.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 1189728617390 in words is "one trillion, one hundred eighty-nine billion, seven hundred twenty-eight million, six hundred seventeen thousand, three hundred ninety".