1900481009 has 16 divisors (see below), whose sum is σ = 2252722176. Its totient is φ = 1568926800.

The previous prime is 1900481003. The next prime is 1900481057. The reversal of 1900481009 is 9001840091.

It is not a de Polignac number, because 1900481009 - 2⁴ = 1900480993 is a prime.

It is a super-2 number, since 2×1900481009² = 7223656131139316162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1900481003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25034 + ... + 66540.

It is an arithmetic number, because the mean of its divisors is an integer number (140795136).

Almost surely, 2^1900481009 is an apocalyptic number.

It is an amenable number.

1900481009 is a deficient number, since it is larger than the sum of its proper divisors (352241167).

1900481009 is a wasteful number, since it uses less digits than its factorization.

1900481009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41756.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1900481009 is about 43594.5066378781. The cubic root of 1900481009 is about 1238.6668400442. Note that the first 3 decimals are identical.

The spelling of 1900481009 in words is "one billion, nine hundred million, four hundred eighty-one thousand, nine".