1814155772836 has 27 divisors (see below), whose sum is σ = 3489683083243. Its totient is φ = 824602791320.

The previous prime is 1814155772809. The next prime is 1814155772861. The reversal of 1814155772836 is 6382775514181.

The square root of 1814155772836 is 1346906.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1814155772836² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 29601321 + ... + 29662543.

Almost surely, 2^{1814155772836} is an apocalyptic number.

1814155772836 is the 1346906-th square number.

It is an amenable number.

1814155772836 is a deficient number, since it is larger than the sum of its proper divisors (1675527310407).

1814155772836 is an frugal number, since it uses more digits than its factorization.

1814155772836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122472 (or 61236 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 58.

The spelling of 1814155772836 in words is "one trillion, eight hundred fourteen billion, one hundred fifty-five million, seven hundred seventy-two thousand, eight hundred thirty-six".