1898480378 has 4 divisors (see below), whose sum is σ = 2847720570. Its totient is φ = 949240188.

The previous prime is 1898480351. The next prime is 1898480383. The reversal of 1898480378 is 8730848981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1783626289 + 114854089 = 42233^2 + 10717^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474620093 + ... + 474620096.

Almost surely, 2^1898480378 is an apocalyptic number.

1898480378 is a deficient number, since it is larger than the sum of its proper divisors (949240192).

1898480378 is an equidigital number, since it uses as much as digits as its factorization.

1898480378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949240191.

The product of its (nonzero) digits is 3096576, while the sum is 56.

The square root of 1898480378 is about 43571.5546888105. The cubic root of 1898480378 is about 1238.2320404076.

The spelling of 1898480378 in words is "one billion, eight hundred ninety-eight million, four hundred eighty thousand, three hundred seventy-eight".