1837213138 has 8 divisors (see below), whose sum is σ = 2756148732. Its totient is φ = 918496896.

The previous prime is 1837213121. The next prime is 1837213139. The reversal of 1837213138 is 8313127381.

It can be written as a sum of positive squares in 2 ways, for example, as 1546612929 + 290600209 = 39327^2 + 17047^2 .

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

It is a super-2 number, since 2×1837213138² = 6750704228879614088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1837213097 and 1837213106.

It is not an unprimeable number, because it can be changed into a prime (1837213139) 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, 31995 + ... + 68542.

Almost surely, 2^1837213138 is an apocalyptic number.

1837213138 is a deficient number, since it is larger than the sum of its proper divisors (918935594).

1837213138 is a wasteful number, since it uses less digits than its factorization.

1837213138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109676.

The product of its digits is 24192, while the sum is 37.

The square root of 1837213138 is about 42862.7243417868. The cubic root of 1837213138 is about 1224.7661667797.

The spelling of 1837213138 in words is "one billion, eight hundred thirty-seven million, two hundred thirteen thousand, one hundred thirty-eight".