1481721100 has 18 divisors (see below), whose sum is σ = 3215335004. Its totient is φ = 592688400.

The previous prime is 1481721079. The next prime is 1481721179. The reversal of 1481721100 is 11271841.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7408506 + ... + 7408705.

Almost surely, 2^1481721100 is an apocalyptic number.

1481721100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481721100 is an abundant number, since it is smaller than the sum of its proper divisors (1733613904).

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

1481721100 is a wasteful number, since it uses less digits than its factorization.

1481721100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14817225 (or 14817218 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 1481721100 is about 38493.1305559836. The cubic root of 1481721100 is about 1140.0454224233.

Adding to 1481721100 its reverse (11271841), we get a palindrome (1492992941).

The spelling of 1481721100 in words is "one billion, four hundred eighty-one million, seven hundred twenty-one thousand, one hundred".