1663902151 has 4 divisors (see below), whose sum is σ = 1664039304. Its totient is φ = 1663765000.

The previous prime is 1663902089. The next prime is 1663902169. The reversal of 1663902151 is 1512093661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1663902151 - 2¹¹ = 1663900103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663902451) 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, 48400 + ... + 75301.

It is an arithmetic number, because the mean of its divisors is an integer number (416009826).

Almost surely, 2^1663902151 is an apocalyptic number.

1663902151 is a deficient number, since it is larger than the sum of its proper divisors (137153).

1663902151 is a wasteful number, since it uses less digits than its factorization.

1663902151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137152.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1663902151 is about 40790.9567306284. The cubic root of 1663902151 is about 1184.9751995617.

The spelling of 1663902151 in words is "one billion, six hundred sixty-three million, nine hundred two thousand, one hundred fifty-one".