1820196460455 has 32 divisors (see below), whose sum is σ = 2985253982208. Its totient is φ = 946610668800.

The previous prime is 1820196460429. The next prime is 1820196460463. The reversal of 1820196460455 is 5540646910281.

It is not a de Polignac number, because 1820196460455 - 2¹² = 1820196456359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1820196460398 and 1820196460407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4572486 + ... + 4954595.

It is an arithmetic number, because the mean of its divisors is an integer number (93289186944).

Almost surely, 2^{1820196460455} is an apocalyptic number.

1820196460455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1820196460455 is a deficient number, since it is larger than the sum of its proper divisors (1165057521753).

1820196460455 is a wasteful number, since it uses less digits than its factorization.

1820196460455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9527407.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 1820196460455 in words is "one trillion, eight hundred twenty billion, one hundred ninety-six million, four hundred sixty thousand, four hundred fifty-five".