1799740872 has 48 divisors (see below), whose sum is σ = 4889736540. Its totient is φ = 598013568.

The previous prime is 1799740861. The next prime is 1799740883. The reversal of 1799740872 is 2780479971.

It is an interprime number because it is at equal distance from previous prime (1799740861) and next prime (1799740883).

It can be written as a sum of positive squares in 2 ways, for example, as 1287804996 + 511935876 = 35886^2 + 22626^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16603 + ... + 62250.

Almost surely, 2^1799740872 is an apocalyptic number.

1799740872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1799740872 is an abundant number, since it is smaller than the sum of its proper divisors (3089995668).

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

1799740872 is a wasteful number, since it uses less digits than its factorization.

1799740872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79182 (or 79175 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The square root of 1799740872 is about 42423.3529085102. The cubic root of 1799740872 is about 1216.3820233934.

The spelling of 1799740872 in words is "one billion, seven hundred ninety-nine million, seven hundred forty thousand, eight hundred seventy-two".