1549982198 has 16 divisors (see below), whose sum is σ = 2408028480. Its totient is φ = 747370176.

The previous prime is 1549982197. The next prime is 1549982201. The reversal of 1549982198 is 8912899451.

It is a super-2 number, since 2×1549982198² = 4804889628233822408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1549982197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34115 + ... + 65297.

It is an arithmetic number, because the mean of its divisors is an integer number (150501780).

Almost surely, 2^1549982198 is an apocalyptic number.

1549982198 is a deficient number, since it is larger than the sum of its proper divisors (858046282).

1549982198 is a wasteful number, since it uses less digits than its factorization.

1549982198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32071.

The product of its digits is 1866240, while the sum is 56.

The square root of 1549982198 is about 39369.8132837838. The cubic root of 1549982198 is about 1157.2900966745.

The spelling of 1549982198 in words is "one billion, five hundred forty-nine million, nine hundred eighty-two thousand, one hundred ninety-eight".