1815796 has 6 divisors (see below), whose sum is σ = 3177650. Its totient is φ = 907896.

The previous prime is 1815739. The next prime is 1815799. The reversal of 1815796 is 6975181.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 583696 = 1110^2 + 764^2 .

It is a super-2 number, since 2×1815796² = 6594230227232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1815799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226971 + ... + 226978.

2^1815796 is an apocalyptic number.

It is an amenable number.

1815796 is a deficient number, since it is larger than the sum of its proper divisors (1361854).

1815796 is a wasteful number, since it uses less digits than its factorization.

1815796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453953 (or 453951 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 1815796 is about 1347.5147494555. The cubic root of 1815796 is about 121.9988354274.

It can be divided in two parts, 181 and 5796, that multiplied together give a triangular number (1049076 = T₁₄₄₈).

The spelling of 1815796 in words is "one million, eight hundred fifteen thousand, seven hundred ninety-six".