1955043198 has 24 divisors (see below), whose sum is σ = 4247940528. Its totient is φ = 649832832.

The previous prime is 1955043193. The next prime is 1955043227. The reversal of 1955043198 is 8913405591.

1955043198 is a `hidden beast` number, since 1 + 9 + 550 + 4 + 3 + 1 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955043193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147490 + ... + 160197.

It is an arithmetic number, because the mean of its divisors is an integer number (176997522).

Almost surely, 2^1955043198 is an apocalyptic number.

1955043198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1955043198 is an abundant number, since it is smaller than the sum of its proper divisors (2292897330).

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

1955043198 is a wasteful number, since it uses less digits than its factorization.

1955043198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308048 (or 308045 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 1955043198 is about 44215.8704313282. The cubic root of 1955043198 is about 1250.4090816805.

The spelling of 1955043198 in words is "one billion, nine hundred fifty-five million, forty-three thousand, one hundred ninety-eight".