1663992131590 has 8 divisors (see below), whose sum is σ = 2995185836880. Its totient is φ = 665596852632.

The previous prime is 1663992131569. The next prime is 1663992131597. The reversal of 1663992131590 is 951312993661.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663992131597) 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, 83199606570 + ... + 83199606589.

It is an arithmetic number, because the mean of its divisors is an integer number (374398229610).

Almost surely, 2^{1663992131590} is an apocalyptic number.

1663992131590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663992131590 is a deficient number, since it is larger than the sum of its proper divisors (1331193705290).

1663992131590 is a wasteful number, since it uses less digits than its factorization.

1663992131590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166399213166.

The product of its (nonzero) digits is 2361960, while the sum is 55.

The spelling of 1663992131590 in words is "one trillion, six hundred sixty-three billion, nine hundred ninety-two million, one hundred thirty-one thousand, five hundred ninety".