1898249406 has 32 divisors (see below), whose sum is σ = 3994226208. Its totient is φ = 600629760.

The previous prime is 1898249387. The next prime is 1898249429. The reversal of 1898249406 is 6049428981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95175 + ... + 113378.

It is an arithmetic number, because the mean of its divisors is an integer number (124819569).

Almost surely, 2^1898249406 is an apocalyptic number.

1898249406 is an abundant number, since it is smaller than the sum of its proper divisors (2095976802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1898249406 is a wasteful number, since it uses less digits than its factorization.

1898249406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208636.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1898249406 is about 43568.9041175011. The cubic root of 1898249406 is about 1238.1818233089.

The spelling of 1898249406 in words is "one billion, eight hundred ninety-eight million, two hundred forty-nine thousand, four hundred six".