1898869051 has 2 divisors, whose sum is σ = 1898869052. Its totient is φ = 1898869050.

The previous prime is 1898869031. The next prime is 1898869057. The reversal of 1898869051 is 1509688981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1898869051 - 2¹⁷ = 1898737979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1898868983 and 1898869001.

It is not a weakly prime, because it can be changed into another prime (1898869057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949434525 + 949434526.

It is an arithmetic number, because the mean of its divisors is an integer number (949434526).

Almost surely, 2^1898869051 is an apocalyptic number.

1898869051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898869051 is an equidigital number, since it uses as much as digits as its factorization.

1898869051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 55.

The square root of 1898869051 is about 43576.0146296102. The cubic root of 1898869051 is about 1238.3165350958.

The spelling of 1898869051 in words is "one billion, eight hundred ninety-eight million, eight hundred sixty-nine thousand, fifty-one".