1930409201 has 4 divisors (see below), whose sum is σ = 2206181952. Its totient is φ = 1654636452.

The previous prime is 1930409179. The next prime is 1930409207. The reversal of 1930409201 is 1029040391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1930409201 - 2⁶ = 1930409137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1930409207) 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, 137886365 + ... + 137886378.

It is an arithmetic number, because the mean of its divisors is an integer number (551545488).

Almost surely, 2^1930409201 is an apocalyptic number.

It is an amenable number.

1930409201 is a deficient number, since it is larger than the sum of its proper divisors (275772751).

1930409201 is an equidigital number, since it uses as much as digits as its factorization.

1930409201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275772750.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1930409201 is about 43936.4222598973. The cubic root of 1930409201 is about 1245.1350532784.

Adding to 1930409201 its reverse (1029040391), we get a palindrome (2959449592).

The spelling of 1930409201 in words is "one billion, nine hundred thirty million, four hundred nine thousand, two hundred one".