1898402 has 8 divisors (see below), whose sum is σ = 3106512. Its totient is φ = 862900.

The previous prime is 1898389. The next prime is 1898417. The reversal of 1898402 is 2048981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43124 + ... + 43167.

It is an arithmetic number, because the mean of its divisors is an integer number (388314).

2^1898402 is an apocalyptic number.

1898402 is a deficient number, since it is larger than the sum of its proper divisors (1208110).

1898402 is a wasteful number, since it uses less digits than its factorization.

1898402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86304.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1898402 is about 1377.8250977537. The cubic root of 1898402 is about 123.8215000202.

The spelling of 1898402 in words is "one million, eight hundred ninety-eight thousand, four hundred two".