1799612642 has 4 divisors (see below), whose sum is σ = 2699418966. Its totient is φ = 899806320.

The previous prime is 1799612641. The next prime is 1799612669. The reversal of 1799612642 is 2462169971.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1799371561 + 241081 = 42419^2 + 491^2 .

It is a super-2 number, since 2×1799612642² = 6477211322492440328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1799612641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449903159 + ... + 449903162.

Almost surely, 2^1799612642 is an apocalyptic number.

1799612642 is a deficient number, since it is larger than the sum of its proper divisors (899806324).

1799612642 is an equidigital number, since it uses as much as digits as its factorization.

1799612642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899806323.

The product of its digits is 326592, while the sum is 47.

The square root of 1799612642 is about 42421.8415677585. The cubic root of 1799612642 is about 1216.3531339805.

The spelling of 1799612642 in words is "one billion, seven hundred ninety-nine million, six hundred twelve thousand, six hundred forty-two".