1481638099 has 4 divisors (see below), whose sum is σ = 1482302080. Its totient is φ = 1480974120.

The previous prime is 1481637977. The next prime is 1481638117. The reversal of 1481638099 is 9908361841.

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 1481638099 - 2⁹ = 1481637587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1481638799) 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, 328632 + ... + 333109.

It is an arithmetic number, because the mean of its divisors is an integer number (370575520).

Almost surely, 2^1481638099 is an apocalyptic number.

1481638099 is a deficient number, since it is larger than the sum of its proper divisors (663981).

1481638099 is an equidigital number, since it uses as much as digits as its factorization.

1481638099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663980.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1481638099 is about 38492.0524134528. The cubic root of 1481638099 is about 1140.0241348640.

The spelling of 1481638099 in words is "one billion, four hundred eighty-one million, six hundred thirty-eight thousand, ninety-nine".