1799147720 has 16 divisors (see below), whose sum is σ = 4048082460. Its totient is φ = 719659072.

The previous prime is 1799147683. The next prime is 1799147729. The reversal of 1799147720 is 277419971.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1792167556 + 6980164 = 42334^2 + 2642^2 .

It is not an unprimeable number, because it can be changed into a prime (1799147729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22489307 + ... + 22489386.

Almost surely, 2^1799147720 is an apocalyptic number.

1799147720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1799147720 is an abundant number, since it is smaller than the sum of its proper divisors (2248934740).

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

1799147720 is a wasteful number, since it uses less digits than its factorization.

1799147720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44978704 (or 44978700 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 1799147720 is about 42416.3614658306. The cubic root of 1799147720 is about 1216.2483784673.

The spelling of 1799147720 in words is "one billion, seven hundred ninety-nine million, one hundred forty-seven thousand, seven hundred twenty".