1898474407 has 2 divisors, whose sum is σ = 1898474408. Its totient is φ = 1898474406.

The previous prime is 1898474387. The next prime is 1898474419. The reversal of 1898474407 is 7044748981.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1898474407 - 2²⁷ = 1764256679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1898474437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949237203 + 949237204.

It is an arithmetic number, because the mean of its divisors is an integer number (949237204).

Almost surely, 2^1898474407 is an apocalyptic number.

1898474407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898474407 is an equidigital number, since it uses as much as digits as its factorization.

1898474407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 1898474407 is about 43571.4861692828. The cubic root of 1898474407 is about 1238.2307422656.

The spelling of 1898474407 in words is "one billion, eight hundred ninety-eight million, four hundred seventy-four thousand, four hundred seven".