1838642546 has 8 divisors (see below), whose sum is σ = 2970114924. Its totient is φ = 848604240.

The previous prime is 1838642539. The next prime is 1838642551. The reversal of 1838642546 is 6452468381.

It can be written as a sum of positive squares in 2 ways, for example, as 1837408225 + 1234321 = 42865^2 + 1111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1838642546² = 6761212823922724232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1838642546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35358485 + ... + 35358536.

Almost surely, 2^1838642546 is an apocalyptic number.

1838642546 is a deficient number, since it is larger than the sum of its proper divisors (1131472378).

1838642546 is a wasteful number, since it uses less digits than its factorization.

1838642546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70717036.

The product of its digits is 1105920, while the sum is 47.

The square root of 1838642546 is about 42879.3953548788. The cubic root of 1838642546 is about 1225.0837196149.

The spelling of 1838642546 in words is "one billion, eight hundred thirty-eight million, six hundred forty-two thousand, five hundred forty-six".