1899464401 has 2 divisors, whose sum is σ = 1899464402. Its totient is φ = 1899464400.

The previous prime is 1899464389. The next prime is 1899464459. The reversal of 1899464401 is 1044649981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075774401 + 823690000 = 32799^2 + 28700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1899464401 - 2¹¹ = 1899462353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1899464461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949732200 + 949732201.

It is an arithmetic number, because the mean of its divisors is an integer number (949732201).

Almost surely, 2^1899464401 is an apocalyptic number.

It is an amenable number.

1899464401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1899464401 is an equidigital number, since it uses as much as digits as its factorization.

1899464401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1899464401 is about 43582.8452604921. The cubic root of 1899464401 is about 1238.4459375094.

The spelling of 1899464401 in words is "one billion, eight hundred ninety-nine million, four hundred sixty-four thousand, four hundred one".