1290491942328 has 80 divisors (see below), whose sum is σ = 3615006328560. Its totient is φ = 430112332800.

The previous prime is 1290491942309. The next prime is 1290491942401. The reversal of 1290491942328 is 8232491940921.

It is a happy number.

1290491942328 is a `hidden beast` number, since 1 + 2 + 90 + 49 + 194 + 2 + 328 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5484133 + ... + 5714603.

It is an arithmetic number, because the mean of its divisors is an integer number (45187579107).

Almost surely, 2^{1290491942328} is an apocalyptic number.

1290491942328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1290491942328 is an abundant number, since it is smaller than the sum of its proper divisors (2324514386232).

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

1290491942328 is a wasteful number, since it uses less digits than its factorization.

1290491942328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239130 (or 239117 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 1290491942328 in words is "one trillion, two hundred ninety billion, four hundred ninety-one million, nine hundred forty-two thousand, three hundred twenty-eight".