1992987007 has 24 divisors (see below), whose sum is σ = 2406257280. Its totient is φ = 1641776400.

The previous prime is 1992987001. The next prime is 1992987041. The reversal of 1992987007 is 7007892991.

It is a de Polignac number, because none of the positive numbers 2^k-1992987007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992987001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34032 + ... + 71722.

It is an arithmetic number, because the mean of its divisors is an integer number (100260720).

Almost surely, 2^1992987007 is an apocalyptic number.

1992987007 is a deficient number, since it is larger than the sum of its proper divisors (413270273).

1992987007 is a wasteful number, since it uses less digits than its factorization.

1992987007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37755 (or 37744 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 1992987007 is about 44642.8830498211. The cubic root of 1992987007 is about 1258.4466890187.

The spelling of 1992987007 in words is "one billion, nine hundred ninety-two million, nine hundred eighty-seven thousand, seven".