1898051401 has 2 divisors, whose sum is σ = 1898051402. Its totient is φ = 1898051400.

The previous prime is 1898051383. The next prime is 1898051413. The reversal of 1898051401 is 1041508981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1670765625 + 227285776 = 40875^2 + 15076^2 .

It is an emirp because it is prime and its reverse (1041508981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1898051401 - 2²³ = 1889662793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1898051501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949025700 + 949025701.

It is an arithmetic number, because the mean of its divisors is an integer number (949025701).

Almost surely, 2^1898051401 is an apocalyptic number.

It is an amenable number.

1898051401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898051401 is an equidigital number, since it uses as much as digits as its factorization.

1898051401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 1898051401 is about 43566.6317380630. The cubic root of 1898051401 is about 1238.1387705333.

The spelling of 1898051401 in words is "one billion, eight hundred ninety-eight million, fifty-one thousand, four hundred one".