1243970898 has 16 divisors (see below), whose sum is σ = 2489296800. Its totient is φ = 414431136.

The previous prime is 1243970887. The next prime is 1243970899. The reversal of 1243970898 is 8980793421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243970898.

It is not an unprimeable number, because it can be changed into a prime (1243970899) 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, 44323 + ... + 66726.

It is an arithmetic number, because the mean of its divisors is an integer number (155581050).

Almost surely, 2^1243970898 is an apocalyptic number.

1243970898 is an abundant number, since it is smaller than the sum of its proper divisors (1245325902).

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

1243970898 is a wasteful number, since it uses less digits than its factorization.

1243970898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112921.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1243970898 is about 35269.9716189282. The cubic root of 1243970898 is about 1075.4826455048.

The spelling of 1243970898 in words is "one billion, two hundred forty-three million, nine hundred seventy thousand, eight hundred ninety-eight".