1229801718 has 64 divisors (see below), whose sum is σ = 2586608640. Its totient is φ = 389455872.

The previous prime is 1229801701. The next prime is 1229801719. The reversal of 1229801718 is 8171089221.

It is a super-4 number, since 4×1229801718⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229801719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1598838 + ... + 1599606.

It is an arithmetic number, because the mean of its divisors is an integer number (40415760).

Almost surely, 2^1229801718 is an apocalyptic number.

1229801718 is an abundant number, since it is smaller than the sum of its proper divisors (1356806922).

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

1229801718 is a wasteful number, since it uses less digits than its factorization.

1229801718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 1229801718 is about 35068.5288827461. The cubic root of 1229801718 is about 1071.3836927437.

The spelling of 1229801718 in words is "one billion, two hundred twenty-nine million, eight hundred one thousand, seven hundred eighteen".